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.

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.

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).

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.

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.

Our product is safe to use on fully cured and oil based painted surfaces only. Always spot test first. Do not use on powder coated or aged/worn painted surfaces.

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.

Yes, Septic System can be used in an RV or motor home. Call our 800# (800-323-5497) to find out the appropriate amount for your vehicle.

Only if your knives are silver or silver plated. Use caution! Your knives may appear to be "silver", but have stainless steel blades with silver-plated handles. If Tarn-X is used on the stainless steel blade, it will discolor it. Look on the blade of your knife for silver or stainless steel stamp or contact the manufacturer. If in doubt, test in a small, hidden area. See the following question for possibly correcting this problem.

Artificially oxidized silver is silver that has gone through a chemical treatment to alter its look and luster. It gives silver a smoky, almost blackened look. Do NOT use Tarn-X on artificially oxidized silver, as it will remove the artificial oxidation treatment from the silver.