RustGuard Rust Stain Remover | Tablets

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

One tablet took care of the iron stain in the back of my toilet. Definitely recommend it and will buy it again.

Have used in the past for iron rust bacteria in the toilet tank. Do not mix with bleach!

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.

Ever since the buyout by RPM in 2017, and this product became a Rust-Oleum product, this product does not work as well anymore, and price has increased. I was a purchaser of this product Whink Rust Guard 2 in 1 for 30 years but not any longer. Go back to the original formula please.

We live in an area with hard water and without something the toilets no matter how much you clean them get a buildup. This product has always worked like a dream. Pop on tablet in your tank and you are good to go until now.....same packaging but the tablet is different. It is a different shape, it feels different and it acts differently. Old vs New tablet lasted a month - tablet now lasts maybe 2.5 weeks tablet used to fully dissolve - tablet now has a funky sack like blob left over tablet used to keep water tank and toilet bowl both clean - tablet now only keeps bowl clean Even after tablet was dissolved, I at times would forget to put a new one in and my toilet bowl stayed clean into the next month - now tablet is not fully dissolved, we aren't even at the 2 week mark and bowl is already getting rust stains Rust stains used to come back gradually - rust stains are back before the month is up. So I am thinking they "new and improved" this product and as often happens it doesn't last as long or do the job nearly as well as it used to.

I have very hard water that, even after run through a 2 filter system, leaves stains on my toilet. These tablets have helped keep those stains to a minimum. So easy to use - open package, drop in toilet tank! They do not have a strong scent.

These work SO well on our toilets. We get so much rust and these are great!