Menu
close
Black curve spacer
Where to Buy
Black curve spacer
clr-28oz
Gray CLR Calcium, Lime & Rust Remover bottle with instructions and warnings on the back label.
Person pouring green liquid into bathroom sink; CLP Drain cleaner jug on counter, blue tile backsplash.
CLR cleaner bottle in front of dirty oven and weekly kitchen cleaning checklist.
CLR cleaner bottle beside text syaing it’s safer and free of bleach, phosphates, and ammonia.
CLR cleaner bottle, removes 98% hard water stains, and 80% plant-based; kitchen, faucet, laundry room images.
CLR cleaner bottle beside rust-stained drain in a beige bathroom or shower.
Expanded Image

Calcium, Lime, & Rust Remover

Quickly and easily dissolves and removes tough calcium and lime deposits.

Gray CLR Calcium, Lime & Rust Remover bottle with instructions and warnings on the back label.Person pouring green liquid into bathroom sink; CLP Drain cleaner jug on counter, blue tile backsplash.CLR cleaner bottle in front of dirty oven and weekly kitchen cleaning checklist.CLR cleaner bottle beside text syaing it’s safer and free of bleach, phosphates, and ammonia.CLR cleaner bottle, removes 98% hard water stains, and 80% plant-based; kitchen, faucet, laundry room images.CLR cleaner bottle beside rust-stained drain in a beige bathroom or shower.

Overview

Ingredients

Instructions

  • Quickly and easily dissolves and removes tough calcium and lime deposits. Can be used on surface rust stains from bathtubs, toilet bowls, sinks, glass, chrome, fiberglass, stainless steel, humidifiers, dishwashers, washing machines and showerheads.
  • Part of the EPA’s Safer Choice Program recognizing the product as a safer alternative to traditional chemicals. Contains no phosphates and is septic safe.

What’s great about it

  • EPA Safer Choice Certified
  • 80% Plant Based Ingredients
  • 100 uses... and counting! Explore How-Tos

For use on

  • Chrome

  • Fiberglass

  • Porcelain

  • Stainless Steel

Available Sizes

  • 1 gallon (128 oz) bottle
  • 14 oz bottle
  • 28 oz bottle
  • 42 oz bottle
  • 80 oz Container
UPC: 0-78291-10419-6, 0-78291-31082-5, 0-78291-50317-3, 0-78291-21083-5, 0-78291-42822-3

Name

CAS

USE

Water
#7732-18-5
Dilutent

Diluent: CAS #7732-18-5. Reverse Osmosis (RO) is a water treatment process that removes contaminants from water by passing the water through a membrane, (filter), where contaminants are filtered out yielding more pure quality water.

Lactic Acid
#79-33-4
Chelating Agent

Chelating Agent: CAS #79-33-4. Lactic acid is found in many yogurts and cheeses.  It is also produced in the muscles during intense activity.  Commercially, it is produced by fermentation of simple sugars.  In cleaning products it functions as a chelating agent; a compound that makes metals more soluble in water.  As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.

Gluconic Acid
#526-95-4
Chelating Agent

Chelating Agent: CAS #526-95-4. This ingredient is an acid formed from the sugar glucose, which naturally occurs in fruit, honey and wine. It is a chelating agent; a compound that makes metals more soluble in water. As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.

Lauramine Oxide
#1643-20-5
Surfactant

Surfactant: CAS #1643-20-5. Used in cleaners to modify the surface tension of water, to aid in even spreading and to allow mixing with oil and dirt so that they can be rinsed away; it is included in many soaps, detergents, and several groups of antiseptics. As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.

Tripropylene Glycol n-Butyl Ether
#55934-93-5
Solvent

Solvent: CAS #55934-93-5. Used to slow down the evaporation of many liquid products including oven cleaners and inks for ball-point and felt-tip pens. It is very effective at absorbing organic material. As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.

Yellow No. 5
#1934-21-0
Colorant

Colorant: CAS #1934-21-0. A synthetic lemon yellow dye used all over the world, primarily as food coloring. As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.

FD&C Blue No. 1
#3844-45-9
Colorant

Colorant: CAS #3844-45-9. A blue dye used for foods and other substances. As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.

  • In a well-ventilated area, mix equal amounts of Calcium, Lime, and Rust Remover and warm water.
  • Test on a hidden area before applying to the entire surface and apply directly to the stain with a brush, cloth, or sponge and let soak for 2 minutes.
  • Rinse promptly with cold water.
  • Never leave Calcium, Lime, and Rust Remover on an area for longer than two minutes or mix with other household cleaners or bleach.
  • Always read the manufacturer's directions of the item you will be cleaning to make sure that this product is compatible. Consumer discretion is always advised.

Calcium, Lime, and Rust Remover may etch older sinks, tubs, and tiles. Avoid contact with wood, clothing, wallpaper, carpeting, natural stones, brass, copper, aluminum, galvanized metals, any painted, coated or sealed surfaces. Clean spills immediately.

Explore our How-to Video Library
Curved horizontal shape: green bottom, gray curved border, black background above.
Green gradient arc background

Frequently asked questions

In a well-ventilated area, mix equal amounts of Calcium, Lime and Rust Remover and warm water. Test on a hidden area before applying to the entire surface. Apply directly to the stain with a brush, cloth or sponge. After 2 minutes rinse promptly with cold water. Never leave Calcium, Lime and Rust Remover on an area for longer than two minutes. If the stain does not disappear, repeat this process and add more Calcium, Lime and Rust Remover solution as necessary. Never mix Calcium, Lime and Rust Remover with other household cleaners or bleach. Always read the manufacturer's directions of the item you will be cleaning to make sure that this product is compatible. Consumer discretion is always advised.
Mix one part (ex: 1 cup) Calcium, Lime and Rust Remover to eight parts (ex: 8 cups) water (for 10-12 cup automatic drip coffee makers). Run through coffee maker as if making coffee. Dispose of solution once product has run completely through the maker, then fill entire pot with clear, cold water and run a complete cycle twice. Instructions are for a regular 8-12 cup coffee maker. *Do not use Calcium, Lime and Rust Remover in coffee makers that hold water permanently. *Calcium, Lime and Rust Remover is not recommended for Gevalia, Keurig or Cuisinart coffee makers. *Do not use Calcium, Lime and Rust Remover in espresso machines. Always read your coffee maker’s manufacturer’s directions before using Calcium, Lime and Rust to make sure product is compatible. Certain coffee makers contain permanent carbon/charcoal filters. Consumer discretion is always advised.
Pour enough Calcium, Lime and Rust Remover to cover bottom. Swish around in pot or pan. Add one cup of warm water, allow mixture to soak for two minutes and thoroughly rinse with cold, clean water. Using a soft scouring pad while our product is sitting on the stains is recommended. Always check with the manufacturer of your coffee pots, pans and tea kettles first for their recommendations of products that are safe and effective on their materials.
To clean a dishwasher, remove dishwashing rinse agent before using Calcium, Lime and Rust Remover. Pour a 1/2 cup of Calcium, Lime and Rust Remover directly into the bottom of an empty dishwasher (no glasses, dishes, or flatware but the racks can stay). Run a normal cycle followed by an extra rinse cycle. Make sure there are no detergents or any other chemicals in the machine while using our product. Washing Machine: Run your empty machine (no clothes) without detergent up to the main wash cycle, which is where the water stops and the cycle is about to agitate. Stop the machine and add one-half cup of Calcium, Lime and Rust Remover directly into the tub of the machine. Finish cycle. Run one additional full cycle (wash and rinse) with water only to rinse machine fully. If your machine is HE (high efficiency) and/or 'Water Saver' we recommend using a 1/4 cup of Calcium, Lime and Rust Remover, instead of the normal 1/2 cup recommended for any other type of washer/dishwasher. For Front Loading Machines: Simply add a 1/2 cup of Calcium, Lime and Rust Remover to the soap dispenser (only 1/4 of a cup for HE machines). After the full cycle has completed, run an additional rinse cycle with just water. Make sure there are no clothes or other chemicals in the machine when using our product.
Use only on metal filters. Dilute equal parts of Calcium, Lime and Rust Remover and warm water into a plastic container. Dip the filter into the solution for about two minutes. Brush to loosen buildup and rinse with cold, clean water. Allow to dry.
Calcium, Lime and Rust Remover can not only remove the finish off of brass, aluminum and copper, but can also pit certain grades of brass, copper and aluminum.
Do not use Calcium, Lime and Rust Remover on any natural stone or marble (including cultured marble), terrazzo, colored grout (any other color than white), any painted, coated, sealed or metallic glazed surfaces, plastics, laminates, Formica, Corian, aluminum, galvanized metals, nickel, oil rubbed bronze, brass, copper, steam irons, leaded crystal, refinished tubs or any damaged or cracked surface. Calcium, Lime and Rust Remover may etch older sinks, tubs and tiles. Calcium, Lime and Rust Remover is corrosive. Avoid contact with wood, clothing, wallpaper and carpeting. Some laminated surfaces (counter tops) are coated with a synthetic surface which may be affected by rust removers; clean spills immediately. Always spot test first on an inconspicuous area.
When cleaning a showerhead, we recommend using a 50/50 solution (equal parts) of Calcium, Lime and Rust Remover and warm water. If possible, remove the showerhead and submerge it in the solution for no longer than 2 minutes (using an old toothbrush on the face of the showerhead after it has soaked will assist in removing the mineral buildup) then rinse promptly and thoroughly with cold water. Repeat at full strength if necessary, rinsing thoroughly after each application.
To clean hard water stains, we recommend using a 50/50 solution (equal parts of Calcium, Lime and Rust Remover and warm water) into a glass or porcelain bowl. Apply solution to the affected stained areas of the glasses using a damp cloth or sponge. After 2 minutes, rinse thoroughly with cold, clean water. If it seems that Calcium, Lime and Rust Remover helped a bit but the glasses are not completely clear, repeat at full strength if necessary. Due to the natural density and hardness of calcium as a mineral, the calcium can actually etch and embed itself into the material of the glass (usually present by having a cloudy appearance vs. spotty).
If it seems that the Calcium, Lime and Rust Remover did not help at all, the glasses may be etched and there is no remedy to remove the cloudiness from the glasses. The cloudiness is actually tiny cuts made in the glass by deposits in the water. The only thing that may remove the etching is a jeweler’s polish.
It is not recommended that Calcium, Lime and Rust Remover be used in steam irons. The acids in our products are not compatible with the components of steam irons, steamers or steam machines. We recommend contacting the manufacturer of your particular steam iron, steamer or steam machine for their recommendation for products safe and effective on their materials.
We do not recommended using Calcium, Lime and Rust Remover on a car. The acids in our product should not be used on aluminum or any painted/coated surface. You can safely remove rust from car wheels (if rims are made of chrome or stainless steel only, no alloys).
Calcium, Lime and Rust Remover should not be used in or on a car radiator. Calcium, Lime and Rust Remover may not be compatible with the materials associated with a radiator and it could have adverse effects if the Calcium, Lime and Rust Remover is not rinsed out completely.
We do not recommend using Calcium, Lime and Rust Remover to clean ice makers. The acids in our product are not compatible with the components of ice makers. We always recommend referring to the manufacture's recommendation for safe and effective products to use on their materials.
We do not recommend using our Calcium, Lime and Rust Remover to remove oil. If Calcium, Lime and Rust Remover is mixed with oil, it will darken the concrete, which is very difficult to remove.
Yes, Calcium, Lime and Rust Remover is septic safe. By the time it reaches the septic system it is neutralized with water.
We do not recommend using Calcium, Lime and Rust Remover on or in any materials associated with a swimming pool. Calcium, Lime and Rust Remover should never come into contact with chlorine (or any other household chemical). It can create a poisonous gas and is not safe. We recommend consulting with a pool maintenance expert for recommendations for products that would be safe and effective.
Unfortunately, we do not recommend using Calcium, Lime and Rust Remover on pool tile. It could remove the finish from the tile. In addition, if Calcium, Lime and Rust Remover comes in contact with chlorine, it could result in toxic fumes. We recommend consulting with a pool maintenance expert for their recommendation for products that are safe and effective.
We do not recommend using Calcium, Lime and Rust Remover on any natural stones, especially marble (even synthetic). The acids in our product will remove the seal, penetrating the marble and can compromise the natural beauty of marble. Even synthetic marbles are coated and real marble dust is used to give the effect of real marble. If you spill Calcium, Lime and Rust Remover accidentally on these surfaces, make sure to call a marble professional for further instructions.
We do not recommend using Calcium, Lime and Rust Remover on galvanized metals. When a metal is galvanized, a Zinc coating is put over the metal (usually to protect it from rusting). The acids in Calcium, Lime and Rust Remover will remove the Zinc which could compromise the material.
We do not recommend using Calcium, Lime and Rust Remover on cast iron. The acids in Calcium, Lime and Rust Remover can compromise the metal.
We recommend using or disposing of Calcium, Lime and Rust Remover within 3 years. Make sure cap is securely fastened after each use.
We do not recommend using Calcium, Lime and Rust Remover on any natural stones, including granite. The chemicals in the Calcium, Lime and Rust Remover can remove the seal and penetrate the stone.
Jelmar DOES NOT RECOMMEND the use of Calcium, Lime and Rust Remover in or on any water heaters (tank or tankless); however there is a website that does. Again, JELMAR DOES NOT RECOMMEND THE USE OF IN A WATER HEATER. The chemical make-up of Calcium, Lime and Rust Remover is not compatible with the materials or components of a water heater and cannot be thoroughly flushed through the water heater after 2 minutes. We recommend using what the manufacturer of the water heater deems safe and effective.
Yes, Calcium, Lime and Rust Remover is found to be safe on fiberglass. Always spot test first in an inconspicuous area. Begin with a mixture of Calcium, Lime and Rust Remover and water and progress to full strength if needed.
No, Calcium, Lime and Rust Remover should never be used on clothing. Please find an appropriate stain remover or laundry detergent. If Calcium, Lime and Rust Remover is spilled on fabric, you must rinse immediately. It may break down the fibers in clothing and/or fabric.
Calcium, Lime and Rust Remover should not be used to clean rugs or carpeting. Calcium, Lime and Rust Remover can break down the fibers in rugs and carpeting and pull the color out.
Yes, Calcium, Lime, and Rust Remover is great for cleaning pet bowls from food, grime and water deposits! Dilute equal parts warm water and Calcium, Lime, and Rust Remover to clean ceramic, stainless steel or plastic bowls. Leave on for 2 minutes using a sponge or scouring pad to assist in removal of stains, then rinse thoroughly with cold water. While our product is non-toxic we recommend washing the bowls prior to putting food or water back in them.
Our Calcium, Lime and Rust Remover is non-toxic and water soluble. The chemicals in the product are derived from vegetables, however we recommend all safety precautions be followed, per the back label of the bottle.
Calcium, Lime, & Rust Remover and Probiotic Multi-Surface are both biobased products, meaning they contain largely renewable and plant-based ingredients. CLR Brands® has been recognized as a BioPreferred Champion for 2022, signifying our commitment to using renewable materials, supporting the bioeconomy, and bettering the planet. USDA's BioPreferred Program was first introduced in the 2002 Farm Bill with the goal of increasing the development, purchase, and use of biobased products.

Show More FAQs

RoundedBorderSymmetricalSilver@8x
crossmenuchevron-down