Whirlpool - Affresh Washer Cleaner removes and prevents odor-causing residue that can occur in all brands of high-efficiency HE washers. While bleach only kills odor-causing bacteria leaving behind the detergent residue Whirlpool - Affresh Washer Cleaner uses surfactant chemistry to remove the root problem. Whirlpool - Affresh Washer Cleaner is a formulated slow-dissolve foaming tablet that gets under residue breaks it up and washes it away leaving the washer smelling fresh and clean. Simply place one tablet in the empty wash basket and run either a Normal Cycle or Clean Washer Cycle. The Affresh tabs are compatible with most brands of HE washers on the market today.