CLEANS WITH EVERY FLUSH: Automatic toilet bowl cleaning system with cartridge provides scrub-free and hands-free cleaning without damaging toilet parts LONG-LASTING CLEANING: Toilet bowl refill cartridge lasts up to 3 months (*additional replacement cartridges sold separately) BLEACH CLEANING: Powerful bleach cleansers clean and deodorize with every flush to leave the bowl crystal clear WON’T HARM TOILET COMPONENTS: Provides cleaning solution directly into the bowl without the use of tablets and liquid cleaners that can damage toilet tank components EASY INSTALLATION: Universal design cleaning system fits most toilets and installs in minutes