Item Description From Seller Fluidmaster 8300P8 Flush 'n Sparkle Automatic Bleach Toilet Bowl Cleaning System The Fluidmaster 8300P8 Flush N Sparkle Bleach Toilet Cleaning System removes the unending hassle of keeping your toilet clean. This self- cleaning toilet bowl system eliminates outdated and damaging tablets and liquid cleaners. A superior solution to tablets that put cleaning materials in contact with toilet tank parts, shortening lifespan. Flush N Sparkle puts the cleaning solution directly into the overflow tube eliminating damage to flappers and other toilet tank parts. Simply flush the toilet to release the cleaning solution. A universal design that fit's most toilet models and installs in just a few minutes. Step by step instructions are included for an efficient DIY project that keeps your toilet bowl clean and stain free for up to 3-months. Refill cartridges are also available in bleach and are sold separately. Relax and let the toilet clean itself with the Fluidmaster Flush n' Sparkle self-cleaning toilet system. Eliminate work and hassle fast, with this self-cleaning toilet system Easy installation in just minutes Bleach cleaning system fits most toilet models Scrub free, hands free cleaning that won't damage toilet parts Replace outdated and harmful cleaning tablets and liquids Environmentally friendly system that cleans your toilet for up to 3-months Replacement cartridges available and sold separately Let your toilet clean itself with every flush