Affresh Washer Cleaner removes and prevents odor-causing residue that can occur in all brands of HE washers. While bleach only kills odor-causing bacteria, leaving behind the detergent residue, Affresh™ cleaner uses surfactant chemistry to remove the root problem. Affresh™ 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 wash basket (without clothes) and run a Normal Cycle (hot option) or Clean Washer Cycle. Affresh™ brand is environmentally friendly, safe on septic tanks, and safe for all washer components. Package includes three tablets.