Kill bacteria and keep your bowl sanitary stain-free and deodorized with toilet bleach. 2000 flushes bleach kills 99.9% of bacteria! with a new concentrated formula 2000 flushes bleach delivers continuous cleaning action for up to 4 months 2000 flushes toilet bleach uses powerful chlorine to bleach away stains to keep your toilet bowl continuously sanitary stain-free and deodorized. freshen your bowl and keep the water crystal clear with every flush.