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 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!!!

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.

It came broken up in the package? I am not sure if it will dissolve quicker and need replacement sooner. It does seem to work on calcium and rust so far. I have had it for three days now will see how long it last. I gave it a three for both pucks were destroyed from something before I received them.

This product line is awesome. We rent an old farmhouse in a rural town on well water. The rust and hard water buildup is crazy. Years and years with all kind of products just went nowhere. Then a friend mentioned using this with a pumice toilet wand and I figured we would try. Used the liquid cleaner and it literally melted the iron stains on the sides of the bowl. The tablet has helped keep the bowl from rebuilding a stain and seems to be helping with the interior of the tank. Combined with the pumice stone we went from an hour of scrubbing to maybe 10 minutes each week, and looking so much better