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

Works well

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

I bought these to help break down the rusty residue in my toilet tanks. They seem to be working well.

Does not work, makes a gooey mess in toilet tank!!!

These work on rust and calcium buildup. However, as others have mentioned, when the tablet has dissolved, it leaves a slime on the bottom of the tank. I used a long handled plastic spoon to stir it up, then flush. That takes care of it.

Did the job I expected

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.

It hasn't even been a full day and the rust we thought was impossible to remove is significantly better. I'd say say 80-85% improvement already. We're genuinely shocked.