CLRCalcium, Lime & Rust Remover, Blasts Calcium, Dissolves Lime Deposits, Zaps Stubborn Rust Stains and Hard Water Deposits, 26 Ounce Spray Bottle (Pack of 2)U.S. EPA Safer Choice

This product is good! I have a couple of things to make sure you do this the "right" way.1.Run the exhaust fan in the bathroom. It does not smell bad...just a precaution.2. Wear gloves of some kind so the liquid can't touch you (just precautionary)3. After you spray, use your brush to "beat" the water and raise the suds.I left the suds for 5-10 minutes, scrubbed, beat the suds and repeated.These stains had been there for 2 years. I repeated the process 3 times and most of the stains are gone. I think another round in a couple of days will take the rest of the stains.*So glad I bought this!

Used for removing water mineral buildup on glass doors.

We have very hard water at our place and it's always leaving water spots. This product gets rid of it pretty easily with very minimal scrubbing. Other than the not so good smell, ill continue to use this product.

Works like a charm, removes crystals from faucets, showerheads, etc., Strong, yet effective. I use this in my bathroom, and it helps keep the faucets looking like new.

buy this on the regular.

Doesn't work great. Needs 6 to 10 applications and still have rust

This works great at removing the hard water stains in a toilet bowl.Picture this: you’re in the heat of battle, armed with nothing but a sponge and a dream, staring down a stubborn, rust-stained sink that looks straight out of medieval times. Cue the dramatic music—because here comes the Calcium, Lime & Rust Remover, ready to save you from that crusty nightmare!I swear, it’s like having a tiny superhero in a bottle, minus the cape. One splash, one wipe, and BLAM-O—those calcium and lime deposits that have been mocking you for months suddenly pack up and leave town like they’re late for the train. My faucet literally sparkles now! It’s borderline magical, yet undeniably real (I even pinched myself to check).If your bathroom tiles have been auditioning for the role of “worst water stains of the year,” prepare to see them transformed into shining stars worthy of a big Broadway finale. I’m telling you, one minute you’re shaking your head at the ugliest rust ring you’ve ever seen, and the next, it’s gone, off on vacation with yesterday’s grime.So if you’re looking to break free from scrubby misery and do a victory dance across your squeaky-clean floors, this is your golden ticket. Give it a whirl—you might catch yourself daydreaming about all the other places you can zap next (is it weird I’m eyeing the garden gnome outside?). Don’t say I didn’t warn you: once you go “Calcium, Lime & Rust Remover,” you can never go back.

Love this stuff