Scrubbing Bubbles Fresh Gel Toilet Cleaning Stamp provides freshness with every flush. Simply stick one of the gel discs under the rim. Each toilet gel stamp lasts up to 10 days and provides continuous, flush-activated, freshening action that helps keep toilet rings and limescale build-up away. Clean and freshen with every flush with this automatic toilet stain remover. This pack of six toilet stamps and hands-free applicator can have your toilet smelling citrusy fresh for up to 8 weeks.