Your washer looks clean. Inside, it is holding onto everything your pets leave behind. Pet hair does not rinse away — it works into the rubber door seal, the drum holes and the drain filter, where detergent never reaches it. Add the greasy film that detergent and softener leave behind, keep it warm and damp, and you get the musty smell you notice every time you open the door. Then a little of it goes back out onto your clothes. How it works Drop one tablet into the empty drum and run the hottest, longest cycle your machine has. The tablet dissolves and circulates through the four places buildup actually collects — the drum, the gasket, the filter and the drain line — lifting trapped hair and breaking down the residue that holds odor. What it does Dissolves trapped pet hair — clears the hair and dander matted into the door seal and drum holes. Kills the musty smell — targets the residue film causing drum odor instead of masking it with fragrance. Strips detergent scum — removes the greasy buildup that stops clothes rinsing properly. Keeps the drain clear — helps prevent the hair clogs behind slow draining and pump problems. Works with every washer Front load, top load, high-efficiency (HE) and compact machines. Safe for septic systems and safe on rubber seals. How to use Empty the drum completely — no clothes, no detergent. Place one tablet directly into the drum, not the detergent tray. Run the hottest, longest cycle available. Wipe the door seal dry and leave the door ajar. Repeat monthly. With more than one shedding pet, or if you wash pet bedding often, run it every two to three weeks. 24 tablets per box — roughly a two-year supply at the recommended monthly clean. Keep sealed and out of reach of children and pets. For use in washing machines only.