JelmarCLR PRO Calcium, Lime & Rust Remover

We have hard water in SoCal which leaves calcium, soap scum and rust scale deposits in the shower. CLR (in the gray bottle) had been our go to, but it had been hard to find in the size we needed. I noticed that this Jelmar CLR was listed as commercial grade and was available in gallon size jugs and was at a good price. Plus, it had high ratings. It arrived quickly and I put it to use. It cleared up water spots and got rid of rust stains with very little agitation. I have yet to see such a product work so effective. Actually, out of all the calcium, lime and rust deposit removers I've used, this cleared it out the quickest. That explains all of the high reviews.I paid $23.99 for a gallon-sized container. That's a great deal for an awesome product.This is a highly recommended and solid 5-star product.

I purchased some HIGH DOLLAR professional hard water mineral spot remover for our fleet of golf carts that worked well but the cost was not effective for our entire fleet that are washed in well water multiple times daily. CLR PRO works like a charm, just as well or better than the $$$$$$ stuff. You cannot go wrong in this purchase!

Great for stain removal and easy to use.

I order this every year in November to flush out my fuel oil boiler heating system. Works like a charm! Great value and great product!

Very useful for cleaning rust and hard water stains. Also economically priced in the larger size. Extremely useful around the house.

Great to soak and clean sinks, camodes, bathtubs, etc

Update: This product did help to open the toilet passageways for my decades old toilet, however it did not resolve the problem enough. I was still having backup issues with larger solid deposits. I ultimately did have to replace the toilet. The replacement cost about $250. I did not have to pay for installation. The apparent lesson: CLR can help, but you may have to just replace the toilet. Good news? Starting prices for toilets are very cheap!The toilet was backing up with ordinary solid deposits. The landlord wasn't doing a thing about it. Low rent meant I had to take matters into my own hands! A plumber recommended ZEP CLR. But when I read it can cause severe skin burns and blindness, I changed my mind on that! This CLR product is much safer and has worked wonders. Other reviews tell exactly how to use it to open up toilet pipes for a weak flush problem. Simply filter reviews with the word "toilet" in the reviews section and about a handful will come up with specific instructions on how to use it for this purpose. I strongly suggest not pouring it directly into the tank. The rubber gasket flapper no longer has quite the seal it had since CLR is corrosive. So follow other's instructions. My toilet's flush is MUCH stronger now !

I use this CLR to clean my gun suppressors. I put the Stainless steel and Titanium suppressors in a Mason jar fill it with straight CLR and set it in my UltraSonic machine heated to 50 degrees C. 30 minutes to 1 hour and they come out looking like new. All suppressor baffles clean like new. Don't put any aluminum in the UltraSonic cleaner or it could leave pits in the aluminum. This stuff works excellent for cleaning my suppressors. Highly recommend for this cleaning task.