We do not recommend using CLR PRO Calcium, Lime & Rust Remover on any natural stones, including granite. The chemicals in the CLR can remove the seal and penetrate the stone.

Yes, CLR PRO Calcium, Lime & Rust Remover is found to be safe on fiberglass. Always spot test first in an inconspicuous area. Begin with a mixture of CLR and water and progress to full strength if needed.

We recommend using it only on white grout. If used on colored grout it can lighten the grout color over time or discolor.

We do not recommend using Restroom Cleaner on marble as it can have a reaction with the marble.

Our CLR PRO Restroom Cleaner can safely be used on granite to remove hard water deposits and stains. Granite is the ONLY natural stone that our CLR PRO Restroom Cleaner can be used on.

Yes. Our CLR PRO Restroom Cleaner is safe and effective on glass.

There are up to 15 applications in one 4.5 oz. can of CLR Power Plumber. Do not hold down can for more than 1 second. If you push down longer then less will be available for use.

50’ down a 1.5” diameter pipe, 40’ down a 2” diameter pipe, 35’ down a 3.5” diameter pipe, 25’ down a 4” diameter pipe, 18’ down a 5” diameter pipe

Yes! CLR Power Plumber works great on this annoying problem. Simply follow the directions for a blocked drain (as stated on the box or can) ensuring the green cap is fully submerged in water. Then give CLR Power Plumber a slightly longer application. The drain will run freely once again.

CLR Power Plumber can be used on a number of different drains. The directions for each type of drain follows. Remember never use CLR Power Plumber in any drains where an acid or lye product is present and never mix Power Plumber with a chemical drain cleaner.

Blocked Sinks and Tubs 1. Fill sink with enough water to submerge cap. 2. Block overflow with damp rag or sponge and hold firmly.  3. Place cap over drain opening and press firmly for one second. Repeat if necessary.

Slow-Moving Drains 1. Place stopper in drain. 2. Fill sink or tub with 6-7” of water, remove stopper. 3. Block overflow with damp rag or sponge and hold firmly.  4. Place cap over drain opening and press firmly for one second. Repeat if necessary. Double Sinks 1. Place stopper in second sink and hold.  2. Follow the same directions as a blocked sink.

Shower Drains 1. Place the universal adapter head over drain, ensuring the can’s cap is fully submerged in water. If the water level is not sufficient to cover the green cap, pour water into the cap. 2. Press firmly on handle for one second. Repeat if necessary.