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Natural and DIY Ways To Remove Rust from Metal

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When a metal is rusted, throwing it away and buying a new replacement may not be the most practical solution. The good news is that you can actually remove rust easily using natural products or those items that you can find in your kitchen. With some effort and time, you should be able to successfully remove rust from any metal with these DIY methods.

What is Rust?

It refers to that coating which occurs at the surface of an iron that oxidizes. Thus, it is sometimes referred to as iron corrosion or iron oxide. It is a type of chemical compound, which is available in various combinations of oxygen and iron. As you know, it is often reddish and sometimes orangey in color. Its formation can be sped up if the iron alloy will be combined into corrosive environments.

In some cases, rusting will lead to catastrophic results on iron-based alloys. This is because the process of rusting could weaken the iron alloy until such time that it will no longer be suitable for its main purpose. Too much rust could even make some structures to collapse and if the rusts are on the pipelines, there is a possibility that it will burst. Moreover, rusting can also ruin the aesthetic appearance of the affected iron components.

Rust will appear when iron oxidizes. On the other hand, oxidation will take place if there’s electrolyte and when there’s an electrical difference between two materials that will lead to the formation of an anode as well as a cathode. During the process of rusting, the oxygen atoms that come from the atmosphere and the electrolyte itself will get transferred into the electrolyte and will react to iron thereby resulting to an iron oxide. Taking the electrolyte will prevent the oxidation from happening.

Frequently, the process of preventing corrosion is being initiated due to the detrimental effects that it brings to the iron structures, including its components. Coatings and paints are two materials that help prevent contact in between an electrolyte and iron. Moreover, coatings and paints also help to stop excessive oxygen from getting into contact with iron, thereby preventing rust formation.

Ways to Prevent Rust

When metal is exposed to the outdoor conditions, the risk of rusting will increase. This is especially true if the weather is humid and the climate is rainy. Here are some ways on how it can be prevented.

  • Proper planning of design – planning the design phase of metal properly can help to minimize the penetration of water, which minimizes the risk of rusting. If possible, crevices as well as cavities must be avoided at all cost. Moreover, metal joints must be welded instead of simply bolting them. The drainage holes where water passes through must also be carefully considered. It’s important that the design of the drainage is something that will freely allow the air to circulate. For bigger metal structures, there should be adequate access in order to have some space for the regular maintenance.
  • Process of galvanization – galvanization should involve coating the metal surface with the metallic zinc’s external layer. This can be made possible by hot dipping or by means of electroplating. The layer of zinc can help to prevent the corrosive substances from getting further deep inside the metal. Moreover, zinc will serve as the sacrificial anode and this means that the process of oxidation, or the rusting, will instead be transferred into the layer of zinc.
  • Bluing – another technique that helps to prevent the rusting of metal is bluing. This technique provides small steel items with limited protection from rusting. The process is called as such because this technique makes use of a finish with bluish black appearance. This is commonly used when manufacturing firearms in order to provide a high degree of corrosion resistance.

Learn more about bluing right here

Moreover, bluing is also a technique that’s used on fine clocks as well as other related metal work. With bluing, the steel parts will be immersed into a solution that consists of sodium hydroxide, potassium nitrate, as well as water.

  • Organic coating – one example of organic coating is the use of paint, which is a cost effective way of preventing a metal from rusting. Organic coatings like paint, will serve as barrier against all kinds of corrosive elements, including rust. In order to prevent the penetration of oxygen and water, it is best to use oil-based coatings. Ideally, these coatings should have a thickness of up to 25 micrometers.
  • Powder coating – for this method, a dry powder will be applied into a clean metal surface. After this, the object will be heated and will turn the powder to a thin film. You will find several different types of powders available, such as polyester, acrylic, vinyl, nylon, urethane and epoxy.

When using powder coating to prevent rust, an electrostatic spray is used for the application. The object will then be sprayed with the powder. The powder, which is charged and non-conducting, will be attracted to the metal object and will then cling into it. Afterwards, the object will be placed in a hot oven in order to fuse particles into a film.

  • Regular maintenance – it’s highly recommended that you regularly maintain a metal object in order to prevent rust from forming on the surface and to stop any issue from further progressing. It’s important that you immediately scrape off any tarnishing that will appear. Using razor blade in scraping the tarnish from small objects is recommended. Moreover, any grime on the surface must be washed with warm water and soap. Applying rust resistant coating should also be part of the regular maintenance.

Best Rust Inhibitors

If you find it a trouble to remove rust, the best thing to do would actually be to prevent it from ever coming back. In this case, you will need the help of a rust inhibitor.  Yet, people tend to confuse rust inhibitor with a rust remover. It’s important to note that an effective rust remover may not necessarily be a good rust inhibitor. These two products are totally different from each other. In fact, rust inhibitors that are solvent based have the ability to evaporate more easily and may not be able to provide protection from corrosion for the long term.

When looking for the best rust inhibitor, you should choose something that will not only work, but lasts a long time as well without having to do any frequent application. It should be something that will not evaporate from the surface and will not make you gag because of the unappealing scent of the solvents. Above all, it should be something that will not get washed off during rainstorm and one that will lubricate the surface that it is protecting. Below are some of the best rust inhibitors that are worth checking out.

  • “The Rust Stopper” from HinderRUST – based on a 30-day test in fog/salt, this product has shown the least corrosion. Moreover, after 60 days, the product’s ability to stop corrosion has become even more apparent, which shows that the active absorption ability of this inhibitor is indeed bonding into the metal, which leads to a robust protection against oxygen and moisture.

HinderRust

Picture from Fluoramics

  • TC-11 – this product has done a good job at preventing corrosion as proven by a test sample, which was initially done in 30 days. However, after 60 days, the product has started to get worn off from the underlying metal surface and rusts have started appearing. This solvent-based product is considered a rust remover as well as a rust inhibitor.  Yet, it comes with some tradeoffs. If you will wipe the solvent in order to take off the loosened rust from the metal surface, you will also end up wiping the rust inhibitor, which is why you need to apply it over again.
  • Fluid Film – this product is lanolin based that is made of unrefined wool wax, a type of organic compound. This product is known for having a good adhesion as well as migration qualities, helping it to come up with a protective barrier against rust. It does not have any solvents and is made of both penetrant and lubricant qualities.

Ways to Remove Rust

How to Clean Hardwood Floors with Vinegar

Although there are several commercial products that can be used in removing rusts, you can actually make use of some household ingredients like aluminum foil and white vinegar in removing rusts away. Read on to find out some of the most effective ways on how to remove rust.

  • White vinegar – the acid from the vinegar will react with rust in order to dissolve the particles off the metal surface. Simply soak the affected metal in the vinegar for a couple of hours. Then scrub off the rusty paste making sure that all the particles are gone.  If the metal object is huge that soaking it in the vinegar is not possible, consider pouring a layer of vinegar above the affected surface and leave it there for a couple of hours in order to set. You can then wipe it off with a rag that’s soaked with vinegar.
  • Lime and salt – other kitchen ingredients that are effective at removing rusts are lime and salt. For this method, sprinkle salt all over the rusted surface. Juice the lime and pour over the surface. It’s a good idea to use as much lime juice as you can and leave the salt and lime mixture to set for up to three hours. Then scrub the surface off. Another option will be to use the lime rind to scrub the rusted surface off. The acid from the lime could remove the rust without causing damage on the metal. If you have no lime, consider using a lemon.

  • Baking soda paste – mix water and baking soda until it produces a paste like substance. Spread the paste on the rusted metal surface. Allow enough time for the baking soda paste to set and scrub the surface off. Use a toothbrush when scrubbing off the baking soda and rinse the area with water.
  • Dish soap and potato – another rust removing remedy that makes use of ingredients found in your kitchen is the use of potato and dish soap. The combination can lead to a chemical reaction when exposed to rust, which makes removing the rust much easier. Simply place the potato and dish soap mixture above the metal surface, leave it there for a few hours and eventually, the rusts will be taken off. If you need to reapply, cut the used area of the potato then pour more dish soap and allow it to soak into the metal for a while. If you got no dish soap, use a baking soda paste instead, combined with the potato.
  • Oxalic acid – make sure that you exercise utmost precautions when you use this method in removing rusts. Wear a pair of rubber gloves and goggles. If possible, wear protective clothing before you start working. Above all, avoid smoking and do not inhale the fumes directly.

For this method, wash the affected object with a wash-up liquid and rinse thoroughly. Leave the object to dry. Then mix 25ml of oxalic acid to about 250 ml of water. Then soak the rusted object to the mixture for about 20 minutes. Then wipe the item with cloth or scrub with a brass brush. Afterwards, wash the object fully and leave it to dry once the rusts have been totally removed.

  • Chemical remover – you will find lots of commercial rust removers that can help to effectively dissolve the rust from metal. These products are usually made of oxalic and phosphoric acid that may be harmful once exposed to bare skin. Thus, always exercise precautions when you use these chemicals in removing the rust from metal. Always refer to the directions before using any commercial product in removing rusts. Follow the directions well and take note that the manner of application will vary from one product to another. These products will usually be allowed to set for a longer time before scrubbing off, so you need to be ready for a bit of extra work. Another downside is that they can be a bit expensive and will only be ideal for small metal objects.
  • Rust converter – purchase a rust converter that can help to prevent rust from getting spread faster in the metal surface. This product is just like a spray paint, wherein it serves as primer for the paint over the metal surface. Although the rust converter can help to stop the rust from further expanding, it might not be that effective in terms of totally removing rust from the metal surface. This is only a good option if you have plans to paint the metal surface. Moreover, the use of this product will leave a rough texture since this is basically like putting cover over the rusted area.
  • Scrape with abrasive tools – this process will require too much effort on your part, but it will definitely remove rust. For this method, you need to use certain tools such as screwdriver, which you certainly have in your garage. Otherwise, you can rent tools from a hardware store. You can also use steel wool in scraping off the rusts, which you sure have in your home.

Another option would be to use electric sander that can work well for large metal objects. When scraping rusts, always begin at the roughest grain then move slowly into the finer grains of the metal. You can actually use any tool in scraping off metal. Just make sure to rub the surface with a sandpaper after you are done in order to take away any marks that will appear.

  • Citric acid – you can buy citric acid powder from a local supermarket that you can also use in removing rusts from the metal surface. Pour some powder in a plastic container then add hot water. You will then notice the bubbles reacting from this mixture and you can apply it on the rusted surface. Leave it overnight and rinse afterwards.

How To Remove Rust from Chrome

Ideally, chrome is being used to provide for a shiny and protective coating to metal objects. Usually, it is the metal that’s below the chrome that is often the source of rust. Just like metals, it is also possible to use household products in removing rusts from chrome. Here are the steps on how to go about this.

  • The use of aluminum foil – you can make use of aluminum foil. The aluminum will react chemically when exposed to rust, which results in a material that you can easily wipe and scrub away. And because the aluminum is much softer compared to most metals, it will not end up scratching the chrome surface, as well as the metal that’s right underneath it.
  • Clean the surface – make sure to clean the debris and dirt from the surface with the use of soapy water. Washing the surface allows you to easily locate the rusty areas more easily. For surfaces that are extremely dirty, use vinegar for cleaning.
  • Soak the aluminum into water – get the aluminum foil you have prepared and dip it into water. You can use any kind of water, however, saltwater is the best. The electrolytes as well as the salt can help to speed up the process of chemical reaction.
  • Rub the foil on the rusted areas – next, rub the foil into the rusted area of the chrome. You do not really need to apply too much pressure on this, although areas that are heavily rusted might require you to apply more effort and could take a longer time. Once the aluminum gets dry, consider dipping it in water again. If you’re trying to remove rust from a heavily pitted surface, try wadding up each piece of aluminum foil. The edges that the foil will produce can help to smooth the metal down by filling in the pitted areas.
  • Know when to stop – you may need to stop from time to time in order to take off the rust residue. If the residue that has accumulated have become so thick, stop the scrubbing and take time to wipe away the residues with the use of a towel or cloth. This way, you will be able to see any of the remaining rust and you can continue to rub it with the foil.
  • Rinse the surface – after you have removed the rust, rinse the chrome surface well and wipe it off with a rag in order for the shiny metal part to be revealed.
  • Wipe the chrome dry – water spots could show up on the chrome surfaces and this might cause the metal below to get rusted further. In this case, get a paper towel or a blow dryer to dry up the chrome surface. Consider applying polish or a wax on the clean and rust-free surface in order to prevent it from further rusting.

Aside from the steps above, it is also possible to remove the rust from chrome using mild acid in the form of cola, lime and other acid products in your household. Cola or soda usually has phosphoric acid in them, which is effective for the task at hand. Another option would be to use vinegar or lime juice. These mild acids can help to effectively remove rust without the risk of damaging the surrounding metal.

If you prefer to use soda, it is best to go for diet cola since it does not have too much sugar in it. Thus, the process will be much easier. Make sure you avoid using concentrated acids as these could etch or weaken the metal surface. If you find these household acids ineffective in removing rust from chrome, you can go for the phosphoric acid. But then again, this chemical should be used with care since it could lead to harmful effects when inhaled.

How To Remove Rust from a Car

rusty car

Even small rust on a car could possibly expand with time since the metal below it will be exposed to air and moisture, thereby causing the metal surface to corrode or oxidize. If you have this problem in your car, then here are the steps on how you can remedy the rust before it starts spreading.

  • Exercise safety – the most effective method of removing rust from car is to buff and repaint. But for this method, you need to make sure that you exercise caution as it involves the use of a grinder and a sander. These two powerful tools could lead to injuries if used the wrong way. So to be sure, consider wearing a pair of gloves and goggles before you start working. The use of dust mask is also recommended in order to prevent the paint and rust particles from getting into your lungs. For an even bigger job, use a respirator instead of just a dust mask.
  • Cover the other spots to prevent from getting dusty – buffing the car surface could expose the areas to dust particles. Thus, the dusts could settle into the various areas in your car and will make it look dirty. Furthermore, if you leave these dusts to settle longer, they might be hard to remove in the future. Therefore, in order to keep the dust from getting into other areas, put a mask on those areas in your car that are near the rusted area that you are working on. You can make use of a tarp that’s sealed with a tape below the car in order to define your working area and keep the floor protected from these dust articles.
  • Take off the paint near the rusted surface with the use of a sander – a “Dual Action” sander is highly recommended for this as it gives you full control on the speed of the sander while you remove the paint. Begin with an 80-grit sander until you eventually go for the 150-grit. The sander can help to remove both the paint and the primer from your car, including small rusts that have not fused with metal. It also levels the surface in between the painted surface as well as the unpainted ones. When you’re done with this, the surface will now be very smooth.
  • The next step is to prepare the area for priming. Spray up to three coats of the primer and wait for a few minutes in between coats in order to allow for each one to be dried. Avoid over applying the primer. For some primers, you may need to allow the fresh coat to stay overnight for drying, or at least about 12 hours.
  • Sand with a wet sandpaper – for this part, consider using 400-grit sandpaper as this is especially made for the purpose of sanding in between coats in order to smoothen the surface, which allows for the paint to be able to bond well enough. Make sure to have a pail of water ready so you can frequently rinse the sandpaper and will not be fouled with paint. Finally, wash the painted area with water and some soap.
  • Spray thin coats of paint – when you are done buffing, it’s time that you start painting your car. For this method, you need to use thin coats of paint and allow each coat to rest for about two minutes in between application. That way, the paint will not sag. Apply as many paint coats as you can over the primer in order to achieve a beautiful finish. Leave the paint for at least 24 hours.
  • Buff the new paint – after the paint has dried, buff the edges well so it will blend with the old paint of the car. If possible, apply clear coats so it will match with the overall finish of the car.

How to Remove Rust Stains from Concrete

rusty concrete

One of the most common problems that homeowners are faced with is a rusted concrete surface. Well water tends to have a higher level of iron and could get into your concrete surface. These stains are sometimes hard to prevent and can be an eyesore if they are not removed. So if you notice some concrete surfaces in your home are showing some rusts, here are the steps on how you can remove these.

  • Wash the concrete surface with water and soap – first of all, you need to clean the affected surface with water and soap because dust, dirt and other debris could get in the way between the stain and the cleaner, which makes your work to be less effective. As soon as you have cleaned the concrete surface, leave it to dry before you move on.
  • Pour lemon juice – almost all methods of removing rusts make use of acid in lifting and scrubbing off stains. The high concentration of acid coming from the lemon juice can make it a perfect solution for removing rusts from concrete. For this method, pour some lemon juice on the affected area and leave it there for a few minutes. After about 30 minutes, scrub the concrete surface with a brush.
  • Pour white vinegar instead of lemon juice – if you got no lemon juice, consider spraying or pouring white vinegar on the affected area instead. This is even more effective if you are working on tougher stains. Leave the vinegar to sit on the area for a few minutes then scrub the surface off using a wire brush. Rinse the rust away with cold water and do the same steps for the more difficult stains.
  • Scrub the surface with a brush – leave the lemon juice or vinegar to stay on the surface for about 10 minutes. With the use of a bristled brush, scrub the surface hard until such time that it is already smooth enough. Remove as many stains as you can by working in circles. Avoid using metal bristles as they will have the tendency to remove the topmost layer of the concrete and will end up exposing the aggregate material that’s below the layer.
  • Rinse the surface with water – when you are done, rinse off the concrete surface with cold water and let it dry completely. You may need to go over the rust again since multiple washing is recommended to fully remove all the rust stains away.

Here’s another video for you to enjoy

How to Remove Rust From A Bike Chain

rusty bike chain

It is pretty common for bike chains to get rusty, especially if it is often exposed to salt when running down the road. As you know, salt is corrosive to steel, which explains the reason behind the rusts. But don’t fret. Removing rusts from bike chains is easy, for as long as you follow these steps.

  • Clean the bike chain – before anything else, clean the chain of the bike using a dry cloth and then brush it off as hard as you can in order to remove all dust and debris. You may need to use brushes of different sizes in order to clean hard to reach areas.
  • Juice your lemon – next, grab a lime or lemon and juice it out. Get a scouring pad made of steel and dampen it with the juice then scrub it off into the rusty surfaces. For tarnishes that are a bit hard to remove, consider taking the chain off and soaking it directly into the lime or lemon juice.
  • Turn your bike around – to make it easier for you to work on the bike, consider turning your bike upside down. Use a link removal tool to remove the chain. Crank the removal tool until such time that the link will loosen and will eventually pop out. Take the chain off the bike and soak the chain to the bowl that has the juice of lemon or lime.
  • Dry the chain – after a few minutes, wipe the chain dry and the rusts should now be gone. Reconnect the bike and pour some lubrication about one drop at a time and leave it for a few minutes. This is to allow for the lubrication to be absorbed well.

As you see, removing rusts from your bike chain is so easy and what’s great is that it does not require you to spend lots of money since you can simply make use of ingredients in your kitchen, such as lime or lemon. So do not wait for the rusts to accumulate in your bike chain. The moment you notice some rusts appearing, consider removing it right away. If it will accumulate, your bike chain could become susceptible to breakage.

Painting Over Rust

paint buckets

Just like with most homeowners, perhaps, your garage is filled with several old metals that are unfortunately plagued with rusts. Perhaps, your toolbox is already filled with so much rusty tools. Maybe the toolbox itself is already horrendously rusted. Before you decide to throw these items away and spend big bucks to purchase replacements, you may want to consider repainting them. Remember that although these things may have already rusted, they can still be used so there is no point in throwing them away. Here’s how you can paint over those rusted metals.

  • Preparation – before anything else, ensure that the area where you will be working on is well ventilated. Cover nearby items with cloth in order to keep them protected against overspray. Gather all the rusted metal pieces and scrub the areas away using a wire brush in order to take away all the loose rusts. Then clean the surfaces well using a lint-free rug. Sand the entire items gently. If you are working on a toolbox, make sure to take out everything inside it and sand the entire surface, including the inner components.

After you have sanded everything down, clean the toolbox again using water and soap then rinse well. Wipe them dry and make sure you tape the areas or parts that you do no want to paint.

  • Painting – once everything is cleaned and dry, you can now start with painting. First of all, shake the metal primer spray well until the ball will start to rattle. Grasp the can about 14 inches away from the toolbox and start spraying in a steady manner and in a back and forth motion, while slightly overlapping every stroke of paint you make. Apply about a couple more light coats and then leave for about 15 minutes to dry. Then shake the spray paint for about a minute. Hold the can about 12 inches away from the surface you want to paint then start spraying thin coats. Allow 15 minutes for each coat to dry before you start applying new coats again.
  • Finish – leave the objects to dry completely for about 24 hours before you start using it over again. Do the same thing for the other rusty materials in your household, such as trash cans made of metal, wheel barrows, gardening tools, and anything else that you can find in your backyard.

How to Get Rust Off a Knife Blade

Rust stains are inevitable, especially in your kitchen tools, including the knife. But the good news is that you can actually remove rust spots easily with the use of ingredients coming the kitchen itself. As a matter of fact, if the rusts are only appearing on the metal surface of the knife, the easiest remedy is to soak it with a lemon juice. Read on to find out more ways on how you can deal with rust on your kitchen knife.

The easiest and perhaps the most effective method is by soaking your knife in lemon juice. For this, all you need is a piece of lemon, squeeze the juice out and add a cup of warm water. To begin with, stir together the lemon juice and warm water mixture in a cup. Make sure you use a cup that’s tall enough to be able to accommodate your rusty knife. Next, stick the blades of the knife into the cup and leave it there to soak for about ten minutes.

When you are done soaking the knife, take it off from the liquid and wipe it completely to dry. You can use a towel or a washcloth for this. The soaking of the knife as well as the gentle rubbing of the towel or washcloth should be enough to take away all the stains off your knife. Take note that this method can also be applied to other rusted silverware or those kitchen tools made of metal.

The use of lemon juice is not the only natural means of removing tarnishes from your knife. Another option would be to use coarse salt along with the lime or lemon juice and then scrub the mixture off into the knife surface. Make sure you scrub well enough and avoid using abrasive surfaces, like steel wool, when scrubbing. These will only trigger scratches or might even cause the knife to get damaged.

If you wanted to add salt to your rust cleaning solution, simply blend the juice with the salt so you can come up with an abrasive. Rub this against the troubled spots of the knife, while making sure that you will not leave the salt and lemon solution for too long. Leaving the knife soaked in the salt and lemon juice mixture could lead to greater damages and might even cause harm on the metal surface. Always use a cloth for the application of juice on the knife. A towel or washcloth would work best.

The question that you probably have in mind is whether this will be a permanent solution or a temporary one, which means that the problem might return in the future. Except if you apply some tips on how to prevent your knife from rusting, there is a good chance that the stains will be back at some point. But you can apply the same method over again and it should remove the rusts successfully and will not cause any damage on the knife. Just make sure you do not leave the knife soaking for so long because the acid could speed up the process of rusting.

How to Remove Rust Stains from Carpets

rust on carpet

Picture form One Little Project

There’s nothing more annoying than seeing your most precious carpets getting stained by rusts. This is a common problem, which often results from the wet toys, leaky appliances and furniture, and many more. In order to remove the rusts successfully, you must be patient enough and have a bit of a knowhow in order for the process to be really effective.

When it comes to corrosion stains on your carpets or rugs, your first line of defense would be to leave the object to dry completely. As soon as the surface of the carpet or rug is dry, you can start working. Grab a dull kitchen knife or other tools for scraping in order to take away any excess rusts that flake off. Remember that the more you pry them off before you start, the better your chances of effectively removing the stains for good.

Make sure however that you do this very carefully so as not to end up pulling the threads away and snagging the fibers of the carpet. Remember your goal is to remove the stain and not to damage your carpet.

If you own a Berber carpet, then you need to exercise utmost caution because even a single pry could lead to a long tear. So be very patient and be very careful in scraping. When you are done, you will now have a clear idea of how big the rusted area that you need to deal with is.

The next step can be possibly done in various ways. To decide which of these will be desirable for you, it is best to give some of the cleansing agents a try by applying a small amount in an inconspicuous area. Perhaps, you can put a small amount on that area that’s behind your TV or below the couch and observe if this will lead to bleeding or staining.

The first option is to mix a mild detergent that does not have alkalis to cold water. It’s important to use cold water on carpet stains in order to avoid damaging them. Moreover, hot water will set in the stains, hence, making the rusts to become more stubborn.

With the use of a clean washcloth, blot the stain until such time that you notice them lifting up. You may need to rinse the sponge many times and must be done often in order to ensure that the water is kept clean. If this will not work, leave the stain to be dry again and move on to the next solution.

Lemon juice will always remain to be a popular ingredient for removing stains. If you mix the juice with some salt, you will now have an abrasive cleaner that you can use for removing the corrosion from your carpet or rug. It is a good idea to place the solution inside a spray bottle and saturate the affected area lightly. After this, you can continue with the blotting process.

Another natural remedy for removing rusts from your carpet is to come up with a paste out of the mixture of cream of tartar and water. This should result to a paste that has the same consistency as that of the toothpaste. You can then apply such mixture over the stained area and leave it to sit for a while then blot away with cold water.

Aside from lemon and salt and the cream of tartar paste, you can also make use of vinegar in removing the rust stains from your carpet. Simply pour it over the affected area and leave it to dry. Blot with a cloth and the rust should eventually be gone.