Ammonia cleaning - Ammonia is a colorless gas that is made up of hydrogen and nitrogen (chemical formula NH3). This compound has a pungent odor that is recognizable and highly irritating to the senses. Using Ammonia to Clean Your Oven. Ammonia is a powerful cleaning agent that can effectively remove stubborn grease and grime …

 
Use ammonia to clean your electric oven. Here’s a practically effortless way to clean an electric oven: First, turn the oven on, let it warm to 65°C and then turn it off. Place a small oven-safe bowl containing ½-cup ammonia on the top shelf and a large pan of boiling water on the bottom shelf. Close the oven door, and let it sit overnight.. Horror small story

Ammonia has been around for ages, but it's cleaning power has been forgotten. While my preference is to use less smelly and pungent cleaners, there are time... Ammonia has been around for ages, but it's cleaning power has been forgotten. While my preference is to use less smelly and pungent cleaners, there are time... Overview. CAS No. 7664-41-7. Ammonia (NH3) is found throughout the environment in the air, soil, and water, and in plants and animals, including humans. Ammonia is also found in many household and industrial cleaners. High levels of ammonia can irritate and burn the skin, mouth, throat, lungs, and eyes. Very high levels of ammonia can damage ... Ammonia is a widely used hazardous chemical with many potential applications in agriculture, industry, and commercial products, including various household cleaning products.Cleaning Ovens With Ammonia. First, heat your oven to 150° F. Once heated, turn your oven off. Fill an oven-safe bowl with ½ cup of ammonia and place it on the top oven shelf. Place a pan of boiling water directly underneath. Shut the door and leave overnight. This should loosen any stuck-on food from cooking.Empty the shower of all loose items. Spray down the walls with a commercial stone cleaner or 1 tablespoon of dishwashing soap solution in 1 quart of warm water. Wipe down with a microfiber cloth, using a bit of extra elbow grease on any water spots and soap scum. Rinse with clean water and dry with a microfiber cloth, starting at the top of the ...KnockOut Household Ammonia Multi-Surface Cleaner - 500ml · For cleaning and degreasing tiles, work surfaces, chrome, enamel stoves and fridges, lino floors, and ...Mixing natural products such as water with vinegar makes a good cleaner. Also, consider using baking soda. Other non-toxic cleaners, such as citrus-based ...Start by preheating your oven to 150 degrees Fahrenheit, then turning it off. Next, place a small bowl of ammonia in the oven, making sure to leave the oven door slightly ajar. Let the ammonia sit overnight to allow it to work its magic. The next day, remove the bowl of ammonia and use a damp sponge or cloth to wipe down the …ammonia (NH 3), colourless, pungent gas composed of nitrogen and hydrogen.It is the simplest stable compound of these elements and serves as a starting material for the production of many commercially important nitrogen compounds.. Uses of ammonia. The major use of ammonia is as a fertilizer.In …Considerations on Automotive Glass Cleaners. Right off the bat, we'll tell you this: Using an ammonia-free glass cleaner is a must. Ammonia can break down window tint—especially the cheaper ...Avoid using steam cleaners to clean urine odors from carpet or upholstery. The heat will permanently set the stain and the odor by bonding the protein into any man-made fibers. Avoid cleaning chemicals such as ammonia or vinegar. Strong chemical odors may encourage your pet to reinforce the urine scent mark in that area.For a basic vinegar cleaning solution, we recommend mixing one part distilled vinegar to 10 parts warm water in a spray bottle. Rubbing alcohol. If you have an especially stubborn spot on your window, you can start your cleaning process by applying a solvent like rubbing alcohol to a clean cloth and rubbing it directly on …Ammonia is a powerful cleaning agent that can kill mold quickly. However, it also gives off strong fumes that can irritate the lungs. On the other hand, Vinegar is a milder cleaning agent that does not give off fumes. While it may take longer to kill mold with vinegar, it is a safer option for use in the home. ...Feb 29, 2024 · 30 Uses for Ammonia. 1. Clean your oven. For electric ovens, turn the oven on, let it warm to 150°F, and then turn it off. Place a small bowl with ½ cup ammonia on the top shelf and a large pan of boiling water on the bottom shelf. Close the oven door, and let it sit overnight. The next morning, remove both bowls, and let the oven air out. Learn how to use ammonia safely and effectively for various cleaning tasks, such as glass, fabrics, ovens, and …KnockOut Household Ammonia Multi-Surface Cleaner - 500ml · For cleaning and degreasing tiles, work surfaces, chrome, enamel stoves and fridges, lino floors, and ...Long Life Cloudy Ammonia is an all purpose heavy duty floor and general cleaner. It is also suitable for use to prepare floors for Long Life Self-Shining ...Using ammonia to clean jewelry is easy and inexpensive. It requires only a few ingredients – water, regular household ammonia, and an old toothbrush – that you can find in most houses. The preparation process involves mixing one cup of warm water with 1/4 cup of household ammonia in a container or bowl. Once the mixture has been prepared ...CPDI Clear Ammonia Cleaner Liquid, 1 Gallon, Multipurpose, Multi-Surface Cleaning Solution Removes Grease, Hard Water Stains, and Odors, Kitchen and Bathroom Use. dummy. Brillo 33256 Parsons' Ammonia Lemon Scent, 56-oz. - Quantity 99. dummy.CPDI Clear Ammonia Cleaner Liquid, 1 Gallon, Multipurpose, Multi-Surface Cleaning Solution Removes Grease, Hard Water Stains, and Odors, Kitchen and Bathroom Use. dummy. Brillo 33256 Parsons' Ammonia Lemon Scent, 56-oz. - Quantity 99. dummy.ECOS Window Cleaner is 100% natural, plant-based, and is free of ammonia, phosphates, chlorine, dyes, and petroleum ingredients. It has a slight vinegar scent and isn’t USDA-certified organic ...Mixing natural products such as water with vinegar makes a good cleaner. Also, consider using baking soda. Other non-toxic cleaners, such as citrus-based ...Watch this video for tips on how to clean and store paintbrushes properly so they’ll last a long time. Expert Advice On Improving Your Home Videos Latest View All Guides Latest Vie...Jan 7, 2024 · The table below shows 19 popular cleaning products that contain ammonia. The type of products that contain ammonia include: Tile floor cleaners. Wood floor cleaners. Glass cleaners. Carpet cleaners. Pet stain removers. 1 May 2020 ... This NBC News Learn video explains how ammonia works with water to dissolve fatty acids, like stearic acid, in greasy dirt; ...Sep 28, 2022 · Ammonia is often used as a cleaning agent because it effectively cuts through grease and dirt. However, many people don’t realize that it can also be used to kill mold. When cleaning mold with ammonia, it’s important to understand that the chemical will only be effective on hard, non-porous surfaces. Ammonia-based cleaners have been considered the gold standard in streak-free glass cleaning for decades. However, ammonia is one of the most toxic cleaning product ingredients and is not necessary for achieving a streak-free, spotless windows, mirrors, stovetops, and more. In this article, we’ll share five of …Ammonia is a colorless gas that is made up of hydrogen and nitrogen (chemical formula NH3). This compound has a pungent odor that is recognizable and highly irritating to the senses. Using Ammonia to Clean Your Oven. Ammonia is a powerful cleaning agent that can effectively remove stubborn grease and grime …Stay clean Personal hygiene of the genital area is vital when experiencing a strong ammonia-smelling odor. Ensuring genitals are cleaned well during bathing and completely dried afterward is ...Carbamoyl phosphate synthetase I deficiency is an inherited disorder that causes ammonia to accumulate in the blood (hyperammonemia). Explore symptoms, inheritance, genetics of thi...Step 9: To clean oven racks, lay them on an old towel in a large washtub, fill it with warm water, and add ½-cup Ammonia. Let the racks soak for …2 Feb 2023 ... Ammonia can be used directly as fuel in an SOFC. While the ammonia must still be cracked to hydrogen, this can be done inside the fuel cell due ... Overview. CAS No. 7664-41-7. Ammonia (NH3) is found throughout the environment in the air, soil, and water, and in plants and animals, including humans. Ammonia is also found in many household and industrial cleaners. High levels of ammonia can irritate and burn the skin, mouth, throat, lungs, and eyes. Very high levels of ammonia can damage ... Ammonia (NH3) - The NH3 chemical name is Ammonia. Ammonia is a chemical compound with the formula NH3. At STP, ammonia exists as a colourless gas with a pungent smell. Learn about ammonia, its structure, and its uses here. ... It is used in the household as a cleaner – NH 3 is mixed with water to clean stainless steel and glass; It …Do you know how to clean sheepskin? Find out how to clean sheepskin in this article from HowStuffWorks. Advertisement There is nothing as luxurious and soft as something made out o...First Fill the bottle with tap water. Always add ammonia to water, not the other way around. 8. Pour out a third of a cup of water from the bottle to make room for the ammonia. 9. With a funnel, pour about a third of a cup of ammonia into the bottle. [4]Jan 7, 2024 · The table below shows 19 popular cleaning products that contain ammonia. The type of products that contain ammonia include: Tile floor cleaners. Wood floor cleaners. Glass cleaners. Carpet cleaners. Pet stain removers. Of all the things that need to be cleaned in your home, your mattress is probably the one you think about the least. As long as you use a mattress cover and change the sheets regul...Nov 30, 2023 · November 30, 2023. Yara Clean Ammonia, North Sea Container Line, and Yara International join forces to realize the world's first container ship that will use clean ammonia as fuel. Named Yara Eyde, the vessel will be the first to sail emission-free sea route between Norway and Germany. "Yara Eyde will be the world's first container ship running ... Jun 27, 2022 · What is a good alternative to ammonia? Safe Cleaning Alternatives. Instead of ammonia, try vinegar. For example, as an alternative to ammonia-based window cleaners, try this DIY all-purpose vinegar cleaner. For bathroom cleaning, use vinegar or hydrogen peroxide instead of ammonia to effectively disinfect surfaces. Step 4. Hold the bucket close to the drain to reduce the risk of splashing, and slowly pour the ammonia water down the drain. Leave the solution to sit in the drain for five minutes or longer, to help loosen any grime, soap buildup and any potential clogs in the drain.How to Clean an Oven with Ammonia. Preheat the oven to 200, then turn it off. Place about 2 cups of ammonia in a glass heat-safe dish on the top rack of the oven. Use another glass heat-safe dish and fill it with about 2 cups of boiling water and carefully place on the lower rack. Close oven door. Let the fumes work …Canada and Germany agreed measures to kickstart the trade of hydrogen, which is seen as a clean-energy alternative to dirtier fossil fuels. Both …This test measures the level of ammonia (NH3) in your blood. High ammonia levels can cause serious health problems, including brain damage and coma. Learn more. This test measures ...Do you know how to clean sheepskin? Find out how to clean sheepskin in this article from HowStuffWorks. Advertisement There is nothing as luxurious and soft as something made out o...13 Jun 2023 ... The solution is sold under many trade names, one is ammonium hydroxide, but the important thing to check is the strength of ammonia in % and ...Nov 25, 2020 · Although ammonia has widely been used for many years in the refrigeration systems as a refrigerant and the production of fertilizers, household cleaning chemicals, and disinfectants, it has started regaining attention from researchers, scientists, engineers, and technologists due to its carbon-free nature which can be used as a potential fuel ... Jan 26, 2024 · On the surface clean thoroughly with a clean mop. Allow the area to dry before cleaning a second time. On the second cleaning, use water and a surface cleaner to ensure a thorough cleaning of the area. Never use bleach to clean ammonia because the combined chemicals will create chloramine, that is, a poisonous gas harmful to people. Using ammonia is an excellent method to keep rats away for a while. Before using the chemical as a repellent, you should take note of the places in your house where rats are present. These rodents are commonly found in dark areas of the house, near the walls. This helps in preventing any more rats from entering …Heat the oven to 65°C and turn it off. Place a pot of boiling water on the bottom rack. On the top rack, put a heat-safe bowl or baking dish containing 1 cup of ammonia. Shut the oven door and ...May 25, 2018 · As you clean, be careful to keep your cleaning products separate. When mixed, the contents of certain cleaners can trigger dangerous chemical reactions, such as the combination of ammonia and bleach. Mixing them produces toxic fumes that, when inhaled, cause coughing; difficulty breathing; and irritation of the throat, eyes and nose. #7 Invisible Glass 91164 – Cleaner for Auto and Home for a Streak-Free Shine, Deep-Cleaning Foaming Action, Safe for Tinted and Non-Tinted Windows, Ammonia Free Foam Glass Cleaner, 19 oz. View Product #8 Method Glass Cleaner + Surface Cleaner, Waterfall, 28 Ounce View ProductCleaning the stovetop is a drag, but ammonia can make the job much easier. “Ammonia easily removes grease, grime and dust,” says Thaeler. “It’s also effective for cleaning the fan above ...Ammonia possesses several properties that make it an effective cleaning agent. First and foremost, it is alkaline in nature, which means it can effectively dissolve …Ammonia (NH3) is found throughout the environment in the air, soil, and water, and in plants and animals, including humans. Ammonia is also found in many household and industrial cleaners. High levels of ammonia can irritate and burn the skin, mouth, throat, lungs, and eyes. Very high levels of ammonia can damage the lungs or cause death.Commercial ammonia cleaning products typically mix the ammonia with water and contain about 5 to 10 percent pure ammonia. Advertisement Safety Vinegar is biodegradable and won't harm the environment in any way. Indeed, many types of vinegar are edible, which increases its desirability as a cleaning product. Ammonia carries a few additional ...☞ When ammonia-based cleaners are drained down the sinks/toilets as a part of the housecleaning process, the waste treatment facilities are unable to remove ammonia before returning the water to rivers or lakes. This leads to the accumulation of ammonia in treated waters causing the rapid growth of some types of plants, that too in large numbers.This test measures the level of ammonia (NH3) in your blood. High ammonia levels can cause serious health problems, including brain damage and coma. Learn more. This test measures ...Description. 'Ammonia (total)' refers to the mixture of two different, but related compounds: ammonia (NH 3) and the ionised form (NH 4+ ). The NH 3 compound is the volatile, potentially hazardous substance present in the mixture. Ammonia is used widely in many areas. It is present in commonly used household and industrial cleaners, bleaching ...Mixing bleach and ammonia produces toxic vapors that can incapacitate or kill you. (image: jeshoots.com) Bleach and ammonia are two useful cleaners, but mixing them produces toxic vapors and could potentially kill you. Even if you don’t intentionally mix bleach and ammonia, there are sneaky ways for the reaction to occur. Ammonia is a versatile chemical found in many commercial cleaning products. Chemically, it is a compound that combines nitrogen and hydrogen, with a formula of NH 3.While you can buy many products at a premium price that contain some amount of ammonia, ammonia as a stand-alone liquid is quite inexpensive, which makes it an economical product for cleaning your home in lieu of expensive and ... When ammonia is combined with bleach, for example, the mixture produces chloramine gas, a toxic substance that can cause respiratory distress and irritation to the eyes, nose, and throat. Chest pain, nausea, and wheezing are other potential symptoms. This reaction underscores the importance of avoiding haphazard mixing of cleaning …20 Mar 2023 ... Ammonia is super cheap and great to use as a homemade household cleaner by itself or mixed with other on-hand products.However, ammonia-based cleaning products are not recommended for auto-glass cleaning. Ammonia can dry out or harden the plastic or rubber seals around your car’s windshield, so it can cause your windshield to become loose or even detach completely. Ammonia is bad for car window tint as well. Not only …Ammonia is a versatile and powerful cleaning tool. Learn to safely use ammonia for your chores with help from an expert cleaner in this free …... cleaning products. Discounts, cleaning tips, reviews, special offers and more ... Does Simple Green All-Purpose Cleaner contain ammonia? No, Simple Green All ...Ammonia is a versatile and powerful cleaning tool. Learn to safely use ammonia for your chores with help from an expert cleaner in this free …Cons. Works best with included cloths. Whoosh! is a powerful, non-toxic screen cleaner that'll keep the display of every gadget you own spotless. The odorless liquid is safe for all screens, while three antimicrobial microfiber cloths help ensure that you make the most of every spray.Avoid Products That Contain Ammonia. Most importantly, avoid any cleaning products that contain ammonia. “Ammonia is one component of cat urine, and if cats smell that, they’re more likely to go there,” Dr. Kornreich says. In addition, ammonia and other chemical cleaners can often set the stain—the opposite of what you’re trying to do.Highlights. Brillo parsons ammonia lemon is the strongest ammonia cleaner on the market. Leaves no film residue or streaks for a clean finish on sinks, counters, mirrors, windows, walls and woodwork. Great for laundry stain removal and brightening, as well as removing scuff marks and greasy fingerprints. 5% concentration.How to Clean an Oven with Ammonia. Preheat the oven to 200, then turn it off. Place about 2 cups of ammonia in a glass heat-safe dish on the top rack of the oven. Use another glass heat-safe dish and fill it with about 2 cups of boiling water and carefully place on the lower rack. Close oven door. Let the fumes work …Jan 18, 2023 · Baking soda and vinegar are incredible ammonia replacers. Baking soda, aka sodium bicarbonate, is a fantastic natural scouring agent, whitener, brightener, deodorizer, and bleach alternative . Distilled white vinegar is excellent for cleaning almost anything you usually clean with ammonia, including windows and surfaces. Suitable for use to strip wax from floors. All purpose heavy duty floor cleaner and general cleaning. Also suitable for use to prepare floors for Long Life Self Shining Floor Polish. For excessive wax buildup use Long Life Cloudy Ammonia to strip wax back and apply polish regularly to keep your floors looking new.It’s always a challenge to get into the tiny spaces of your small gadgets. Coupled with the fact that you (very often) cannot use water to clean them, we often end up with cruddy a... Ammonia Floor Cleaner. When using ammonia for cleaning floors, you'll be surprised how much wax and dirt buildup it can remove. It's terrific on old vinyl, tiles and some people even use it for removing stains on concrete and carpeting! To clean tile and vinyl floors: A cup of ammonia added to 1/2 gallon of water should remedy most scummy old ... Ammonia is a powerful cleaning agent, but it can pose risks if ingested or inhaled. Keep pets and children away from the cleaning area throughout the process to avoid any accidental exposure. 3) Read and follow the instructions: Familiarize yourself with the manufacturer's instructions on the ammonia product …Ammonia is a versatile chemical found in many commercial cleaning products. Chemically, it is a compound that combines nitrogen and hydrogen, with a formula …For everyday kitchen and bathroom cleaning, mix one part ammonia and eight parts water. Add a few drops of dish detergent. Use in a well-ventilated area; wear gloves and goggles. Plain water and a ...Clean ammonia has the potential to become the preferred fuel of the future. As a carbon-free molecule, it doesn't release any CO2 or other greenhouse gases (GHG) when burned. It can be utilized as a fuel in engines or as a feedstock for producing other sustainable fuels. Ammonia is a better option for long-distance transportation than …Cons. Works best with included cloths. Whoosh! is a powerful, non-toxic screen cleaner that'll keep the display of every gadget you own spotless. The odorless liquid is safe for all screens, while three antimicrobial microfiber cloths help ensure that you make the most of every spray.Description. Give your home a refreshing new feel with the Smartly Ammonia Lemon Scent - 64oz. This all-purpose cleaner cleans, deodorizes, and removes stains effectively from most surfaces like glass and steel. It leaves a pleasant lemon scent in the air that really adds to the cleanliness. Keep this large can at hand to meet all …An effortless way to clean your oven racks is to line your bathtub with dryer sheets. Lay the oven racks on top of the sheets, fill the tub with just enough warm water to cover the racks and add a half-cup of dish soap. Allow everything to sit overnight. Drain the tub in the morning and use the soaked dryer sheets to wipe the racks clean.ammonia: [noun] a pungent colorless gaseous alkaline compound of nitrogen and hydrogen NH3 that is very soluble in water and can easily be condensed to a liquid by cold and pressure.Industry advocacy body Hydrogen Europe has released a new report on the potential of clean ammonia production & utilisation in Europe. The EU’s 32 ammonia production facilities have a theoretical production capacity of 17.7 million tonnes per year (about 10% of the world’s total), and account for about one-third of all hydrogen …Ammonia is a common ingredient in many cleaning products, especially glass cleaners. Learn about its benefits, drawbacks, and how to use …Ammoniacal cleaner with pleasant pine perfume, highly recommended for cleaning bathrooms, floors, walls and vitrified surfaces. It does not scratch any surface, ...26 Jan 2012 ... Ammonia is a versatile and powerful cleaning tool. Learn to safely use ammonia for your chores with help from an expert cleaner in this free ...

26 Mar 2019 ... Since ammonia evaporates pretty quickly, it's most often used as a component in glass cleaning solutions to prevent the appearance of streaks.So .... Best free sports streaming websites

ammonia cleaning

101 Clear Ammonia is ideal for cleaning those hard to clean surfaces,Can be used on floors, kitchen surfaces, glass and more,Size: 1.89 L26 Mar 2019 ... Since ammonia evaporates pretty quickly, it's most often used as a component in glass cleaning solutions to prevent the appearance of streaks.So ...In general, ammonia is good for cleaning anything that resist the use of other cleaners: clothing stains such as pen markings, perspiration, and blood; carpet stains such as red wine; and upholstery stains caused by pets and food or drinks. Many bathroom cleaners contain ammonia. Ammonia can stop mildew just as well as bleach without …1 cup of warm water. 1 cup of white vinegar. 1 spray bottle (1-pint capacity) 1 soft cloth. tb1234. Mix equal parts white vinegar and water and pour the solution in an empty spray bottle. Spray it on your aluminum items at home and wipe it clean with a soft cloth. This solution has two years of shelf life.A computer screen should never be sprayed or wiped with Windex. Ammonia and alcohol-based cleaners can damage an LCD screen. Water and a cloth are typically effective enough to cle...Description. 'Ammonia (total)' refers to the mixture of two different, but related compounds: ammonia (NH 3) and the ionised form (NH 4+ ). The NH 3 compound is the volatile, potentially hazardous substance present in the mixture. Ammonia is used widely in many areas. It is present in commonly used household and industrial cleaners, bleaching ...In this article, I discuss 7 of the most effective methods to reduce ammonia, which are: Add beneficial bacteria. Perform a 50%-80% water change. Use a detoxifying water conditioner or ammonia remover. Use a good aquarium filter. Add some live aquarium plants. Reduce feeding frequency. Regular tank maintenance and cleaning.20 Mar 2023 ... Ammonia is super cheap and great to use as a homemade household cleaner by itself or mixed with other on-hand products.Carbamoyl phosphate synthetase I deficiency is an inherited disorder that causes ammonia to accumulate in the blood (hyperammonemia). Explore symptoms, inheritance, genetics of thi...Simply place a small bowl of nonsudsy ammonia on a cookie sheet and put it in the oven overnight. The fumes will help soften the gunk on the oven walls and floor. But be careful when opening the ...If ammonia has been spilled on your or someone else’s skin, immediately wash the affected area with gentle hand soap and clean water for at least 15 minutes. In case of ammonia getting in the eyes, rinse the affected eye(s) under cool or lukewarm water for at least 15 minutes or until help arrives.Lysol Kitchen Pro Cleaner. This all-purpose cleaner can disinfect all your kitchen surfaces. This product has two sit for two minutes to completely disinfect. Like Clorox, Lysol products are also recognized by the EPA for being able to kill 99.9 percent of bacteria and viruses, including salmonella and COVID-19.Ammonia is a colourless, reactive gas that is lighter than air (approximately half as heavy) which dissolves readily in water. ... In the home, ammonia is used in certain cleaning products and ...Ammoniacal cleaner with pleasant pine perfume, highly recommended for cleaning bathrooms, floors, walls and vitrified surfaces. It does not scratch any surface, ...May 6, 2021 · Fabuloso56 oz. Multi-Purpose Liquid Cleaner, Lemon 2X-Concentrated. ( 42) $4. . 48. HDX 64 oz. Lemon Ammonia is a great solution for nonporous surface cleaning and deodorizing. This is a multi-purpose product that is great for cleaning many types of flooring, windows, mirrors, and more. Sep 16, 2020 · 1. Conquer Concrete Stains. Discoloration on your concrete driveway, garage floor, or patio can be an eyesore. Mix 1 cup ammonia with 1 gallon of water in a bucket and apply it to the stains... To lower ammonia levels in your fish tank, clean dirty filters once every 1-2 weeks. If you’re using an under gravel filter, vacuum away any debris that has collected on the intake tube or around the filtration plate. If you’re using an internal type of filter such as a canister filter, remove and clean the filter cartridges. ...Oven grease is difficult to get rid of and needs a lot of effort. But keeping a pot of hot water and a bowl of ammonia overnight will loosen it and make cleaning easier, according ...Clean with diluted cleaning solution. Use a 1/2 cup of any of the following: ammonia, bleach, or hydrogen peroxide and a gallon of water. Reminder: do not mix bleach and ammonia. Ink (magic marker, pen, ink) On light colored stones, clean with bleach or hydrogen peroxide. On dark colored stones, clean with lacquer thinner or acetone. Paint.

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