Fluidmaster 8300P8 Flush 'n Sparkle Automatic Bleach Toilet Bowl Cleaning System and 1 Cartridge

This is the best product for keeping the toilet tank clean and the toilet bowl smelling clean. The only problem I am having now is the bleach refill's are not easy to find in a store and have to be ordered online which makes the cost more than purchasing in a store.

Drop them in the tank, or use them over the bowl to provide a means of helping to reduce ugly hard water build up.

Excellent product and a brilliant idea. Still cleans the bowl, but you don't have to put anything in the tank to destroy all that equipment.

The system is easy to install. The bleach stay out of the tank so the internals aren't damaged but the bowl stays very clean. We needed a couple months to get results but so far they are very good

Doesn't turn water blue and does not destroy the flapper or other parts

I like these, they keep my toilet bowl clean with minimal scrubbing. They last about 2 months with everyday flushing, but at least the bleach keeps the sewer pipes disinfected a bit..

We have horrible city water and we've tried countless products to stop the black marks in the toilet, eventually using pumice stones. Use them too often and you ruin your toilet surface. Then we came across this stuff and were not hopeful, having been disappointed so many times. Well, . . . lo and behold, it is terrific. A snap to install, no horrid bleach smell and our toilets are spotlessly clean Hallelujah!

I had to make modifications to my Kohler all in one as the fluid master would not fit without interfering with the flush. Needed extra long tube to reach.

This is a 5 star product functionally with a 1 star design flaw. The good: The bleach delivery system is ingenious to save your toilet gaskets. The effectiveness of the bleach in keeping the toilet clean and ring-free is unmatched to traditional tank tablets. It remains to be seen how long the effectiveness remains but to date, I have had to touch the toilet bowl which normally have a ring starting to form within 2-3 days The bad: The mechanism to install the device involves hanging it on the back of the tank. Easy right? Not if your tank is flush to the wall. The bracket is wide with a curved edge and there is NO way you can install as instructed if your toilet tank is against your bathroom wall. My solution. I managed to hang my device on the side of the toilet tank. It's less than ideal. The clip design for the dispensing hose didn't work on my design either. I had to remove it and work to press the hose into the hole. Final assessment: I have ended up with a 5 star product. But it couldn't be installed as designed. If your tank back is flush to wall, this wouldn't work for you as designed. If you can work around that, I highly recommend. If you can't, then it's a shame as the concept is just wonderful!

This was not easy to install, and once it was, we haven't found it has done anything to keep out toilet bowl cleaner than before.