Rust-Oleum RustGuard Rust Stain Remover | Heavy-Duty Iron Stain Remover & Toilet Bowl Cleaner For White & Colored Toilets | 2 Tablet Box

Excellent product. We have very hard water & builds up quickly. It’s a constant battle using pumice & harsh chemicals that didn’t work well. These stain removal tablets are fantastic! No scrubbing or stress, just drop into tank, stains & limescale gone overnight. I highly recommend!!!

I have well water full of iron and it has worked wonders on my toilet

Works well. No scent and easy to use.

Love these so much! So perfect for our well water, keeps the toilets clean!

I got these because I live in the country & my water comes from a well. It has alot of metallic & minerals. I used this brands liquid spray & it worked great to keep the ring out of the toilet. I put this tablet in & after 2 weeks it looks like a gelatinous blob just sitting in the tank. The stain is coming back. I will be going back to the spray.

Did not work at all. Instead left rust lines which needed to be removed other ways. Unfortunately i did not bother to take before picture for comparison.

Worked like a charm!!

I rent an apartment. Everything was redone before I moved in a few years ago, except they kept the old toilet bowl. I tried clorox inside the tank to clean EVERYTHING from the inside out to remove the rust stains continually building up. I ordered Pumice bars, specifically made to remove rust stains inside the bowl, by hand scrubbing with gloves on. Long story short, I read a lot online and this small item, Rust-Oleum Rust Guard was mentioned as a miracle cleaner for rust. I bought it at another store. Tried it, and followed the instructions very carefully. It’s placed inside the tank, and with every flush the rust stains are being removed. I ran out of the product, and found it at Amazon. It’s the only product I’ll EVER use to keep a white looking toilet bowl. Use it, you won't regret it!!!