Questions and Answers for CLR 28 OZ-Ounce Calcium Lime Rust Remover

A:  We do not recommend using our CLR Calcium, Lime and Rust Remover on any painted, coated or sealed surfaces. The acids in our product can remove paint/

A:  Product question doesn't apply to product category

A:  Depending on the material of you faucets (our product is safe to use on chrome or stainless steel only, no other metals/finishes) & the sink material (our product is safe to use on porcelain, stainless steel & fiberglass....no plastics or natural/artificial stones), you would use as directed per the back label of the bottle. #1 spot test. #2 Mix equal parts CLR Calcium, Lime & Rust Remover and warm water # 3 apply to the affected areas of the faucet base/handles. Scrub with a soft nylon scouring pad. #4 After 2-3 minutes rinse promptly & thoroughly with clear cold water. Repeat this process, if necessary.

A:  While our CLR Calcium, Lime and Rust Remover (in the grey bottle) is safe to use on brick, we recommend using a 50/50 blend of CLR and warm water solution, pick an inconspicuous SPOT TEST AREA FIRST (to see if there will be any chemical reaction between our product and your brick). Since brick is naturally made of calcium, you run the risk of altering the pigment and composition when using a calcium remover, such as our product, on something naturally made of calcium. Apply the solution to the SPOT TEST AREA using a damp cloth or sponge, let sit for no longer than 2 minutes (using a scrub brush on the stain while the solution is on the material is safe and recommended) then rinse thoroughly with cold water. Let spot area dry completely (usually overnight) to see if there was any negative chemical reaction, if not, it would be safe to go ahead and use it on the other affected areas. Note: per the directions on the back of the bottle, do not use on tinted, sealed, painted, or coated brick.

A:  Product question doesn't apply to product category

A:  Our product works most effectively if our product can adhere directly to the affected stained areas undiluted. If you have hard water buildup or a stubborn looking stain below the water line, the best way is to remove the water from the bowl (either physically or turn the water valve off located behind the toilet, flush it then plunge out any remaining water). If stains are above the water line there is no need to remove the water. In either application: Apply the CLR directly to the stains using a damp cloth or sponge, take a stiff bristled brush or a pumice stone (sold in hardware stores for toilets, it’s compressed lava, needs to be run under warm water to moisten first and is safe enough not to scratch the porcelain), and scrub for no longer than 2 minutes gently in a circular motion. Flush to rinse. Repeat if necessary

A:  We recommend contacting Trex for their recommendations for products safe to use on their materials. Our product may not be compatible with the material associated with Trex decking.

A:  Our CLR Calcium, Lime and Rust Remover can only be used on metals made of chrome or stainless steel only, no other metals or finishes and it should never be used on any painted, coated or sealed surfaces. Our product can remove paints/coatings/sealants.

A:  Product question doesn't apply to product category

A:  If your garage floor is made of concrete & is not painted, coated or sealed: While our CLR Calcium, Lime and Rust Remover (in the grey bottle) is safe to use on concrete, we recommend using a 50/50 blend of CLR and warm water solution, pick an inconspicuous SPOT TEST AREA FIRST (to see if there will be any chemical reaction between our product and your concrete). Since concrete is naturally made of calcium, you run the risk of altering the pigment and composition when using a calcium remover, such as our product, on something naturally made of calcium. Apply the solution to the SPOT TEST AREA using a damp cloth or sponge, let sit for no longer than 2 minutes (using a scrub brush on the stain while the solution is on the material is safe and recommended) then rinse thoroughly with cold water. Let spot area dry completely (usually overnight) to see if there was any negative chemical reaction, if not, it would be safe to go ahead and use it on the other affected areas. Note: per the directions on the back of the bottle, do not use on tinted, sealed, stamped or coated concrete and not on concrete laid less than 1 year ago.

A:  As long as the utensils/flatware are made of stainless steel, our product would be safe to use. Always spot test first.