Questions and Answers for CLR 1 Gal. Calcium, Lime and Rust Remover

A:  It should, but test an inconspicuous spot first, as it might break up either the brick or the cement/mortar between the brick. Just pour a little on and leave it for about 20 minutes, scrub it in, and rinse. Do the same to the cement/mortar as well. 

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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: do not use on tinted, coated or painted brick

A:  While our CLR Calcium, Lime and Rust Remover (in the grey bottle) is safe to use on concrete or brick pavers, 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 pavers). Since concrete and brick are 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 or brick

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A:  Depends on what your pavers are made of - this is an acid-based product that will dissolve calcium. Try in a non-show area to determine if the chemical reaction is acceptable.

A:  While our CLR Calcium, Lime and Rust Remover (in the grey bottle) is safe to use on concrete or brick pavers, 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 pavers). Since concrete and brick are 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 or brick

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A:  I have used it with success on my concrete garage floor. I have not used it on my pavers.

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A:  This is an acid-based product that neutralizes calcium by chemical action. Not sure what "floor wood scale" is but the product works well on hard water build up.

A:  We do not recommend using any of our products, effective in dissolving mineral deposits caused by hard water (calcium/lime) or rust on wood.

A:  I would not recommend it.. maybe contact manufacturer.

A:  The proper dilution to use is on the back label.

A:  In most applications our product should start out with a 1:1 (equal parts) diluted solution, however if using on porcelain it can be used full strength. Always spot test first in an inconspicuous area.

A:  Sure, just add water but watch for the chemical reaction if you use hard water.

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A:  Absolutely.

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A:  We do not recommend using any of our product, effective in removing mineral deposits, on any natural stones, including bluestone

A:  Hi Phil, as a regular user, l would use a etching chemical first and then this! Yes it would work

A:  I Love the way clr cleans. I have never had any issues with it damaging my toilets.

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A:  This product is basically acidic in nature. If your efflorescence is calcium this product will dissolve the calcium but if the base material (concrete, block etc.) that will also be dissolved until the acid is neutralized. Try some on a non-show area?

A:  Our CLR (clear) Calcium, Lime and Rust Remover can dissolve efflorescence, however it should only be used on materials listed as approved on label.

A:  The shower door probably has a long time build-up of soap (scum). CLR with a nylon scratch pad should do well. an alternative would be bleach, but don't mix the two. Use rubber gloves for either!! I recommend CLR.

A:  I use it for this but tried in a non-show area first to determine affect on glass.

A:  We recommend using a 50/50 solution (equal parts) of CLR (Clear) Calcium, Lime and Rust Remover and warm water on the GLASS ONLY (avoiding any contact with the frame trim or track of the doors as our product cannot be used on aluminum or rubber). To do this safely we recommend dipping a sponge into the solution, squeezing out any excess to avoid dripping. Carefully apply the solution to the glass only, let our product sit on the glass for no longer than 2 minutes. Then take a clean sponge and clear cold water and hand remove our product from the glass. Do not spray the product off of the glass as you are certain to get it on materials it’s not intended to come into contact with. Note: Due to the natural density and hardness of calcium as a mineral, if you are unable to scrape any residue off topically using a fingernail or razor blade, the calcium can actually etch the glass and embed itself into the material of the glass. If this has happened, there is no remedy for this.

A:  I personally have not used on shower doors. On their website you might be able to find an answer to that question. I use this product to clean my tub, toilets and bathroom sinks.

A:  We do not dictate which retailers our products are carried in. Most retailers choose which of their stores will carry each item. Thank you

A:  Each corporate office determines which stores will carry any of our products, we do not have any control of which stores have our product and don't. Thank you

A:  Yes, but Barkeepers Friend Spray and Foam will do a better job, and be much gentler to the screen. Use this on ANY surface to take off calcium, lime, rust, grime, etc... it's phenomenal.

A:  yes.

A:  I brought it last week and it is a great product to clean the Rust and Calcium deposits on the surface. I was able to repair a device which had rust and post removing the rust it worked smoothly.

A:  IF the screen door is metal, not aluminum this product will remove the rust.