Love this stuff. I have really bad hard water and it build up like crazy in my toilet bowl and I don't have time to scrub my toilet everyday. I've tried the Clorox tabs but didn't see much of an improvement with the hard water plus it's not that safe if little kids or pets get into the toilet bowl (they're so sneaky). I finally decided to try these and they have really helped. They were cheaper than the tabs too. It's like cleaning my toilet everyday without sacrificing my time to do it. The gel is toilet cleaner so you get a flush of cleaner every time which is great at fighting build up. It doesn't replace cleaning your toilet but it makes it a lot easier and less often. Thanks scrubbing bubbles!