Bests & Worsts Reviews from Amazon

The advertising of this product is very misleading. It does nothing to keep your toilet bowl clean. We've had it installed for over a month with no evidence of helpful results. We cleaned the bowl before installing the device and noted brown stains over the entire underwater surface within two weeks after installation. I've used the blue and uncolored refills with similar results. At the price of $21+ and the cost of refill cartridges, this is a giant rip-off to consumers.