Whink 20223 RUSTGuard Time Released Bowl Cleaner, 4 oz

We have well water with a high iron content. My wife has tried several products to no avail. I bought a pack of these. At first it changed the water to a purple color.(i didn't clean the tank as directed first). That lasted a few weeks. My wife was not happy. Then the water turned clear and all the iron stains etc. disappeared. I'm now a hero !! It states it lasts a few weeks, but we're on our second month and the toilet is still super clean and I can still see some of the product in the tank. Great stuff.

A one of a kind product which does what it says. You won't need a sandstone. Have used these for a decade because they neutralize the iron and minerals in the water in the tank before the water is delivered into the toilet bowl. Be aware each 'pellet' is solid and apx. 2" x 1.5"; a few orders have arrived with cracked pellets, from various dealers, because they were not in sufficient protective delivery packaging. The manufacturer seals them tight but the issue is the light wt. bubble shipping bag. If you have well water you need these.

Pros: - maintained my tank after it was cleaned - helped flush out rust & build-up I couldn't reach - washed away the toilet bowl stain I couldn't get rid of - good price - no smell Cons: - doesn't work on a super dirty tank (thick black slime appears) - visible in the water as it comes apart (not a big deal, but guests might wonder) - lasts a couple days, maybe a week

I tried one and it cleaned the bottom of my tank but not the top. So I cleaned the top manually with some acid based manual cleaner and brush. After a month rust started coming back in the entire tank. So I did the acid and brush wash again and then put another of these tablets in. A month later and this tablet has dissolved and there is no rust in the entire tank. So I will keep using these to see if I no longer have to buy rust spray and washing manually ever again. These tablets turn into a semi gel in the tank and slowly dissolves.

I last purchased these in January of 2015 and paid $7.00. I think these do a good job of keeping rust stains in check and probably do a better job of eliminating them altogether if you catch them early. I did have a bad experience using these in one of my toilet tanks and that's the reason for my three star rating. The toilet in question had a Fluidmaster 400CR Toilet Fill Valve and Flapper Repair Kit fill valve. Shortly after placing this Whink Rust Guard in this particular tank the valve started to malfunction. I suspect that "flotsam and jetsam" from this tablet dissolving got kicked up in the tank and some of this entered the valve and caused the problems. What happened is the tank began refilling very, very slowly. It would take a good hour for the tank to refill for the next flush and I ended up having to replace the valve altogether. In all fairness it could be a coincidence. It's just I've never had something like this happen before and the fact that it presented itself within two days of adding a Whink tablet to the tank leads me to this conclusion.

This item works great. Cleans the tank an also helps clean the streaks of rust running down the inside of the bowl.

Rust-Oleum acquired Whink. The Rust-Oleum RustGaurd tablets are almost useless...no where NEAR as effective as the Whink truncated cone plasticized tabs. Guess you settle for Rust-Oleum or move on. Whink drop-ins where perfect, Rust-Oleum not so much....not worth the price.

My toilet had major stains after a night of Chipotle. It took a couple of days and all the skids and scrapes disappeared. Great product I will be buying more as needed. Just a note though, It will not clean up and accidents on the seat, side of the toilet, wall or on the floor.