When your washing machine smells, so do your clothes and laundry room. Tide Washing Machine Cleaner's unique oxygenated formula helps remove odor-causing residues that build up on the surface of your washer over time. Unlike bleach, vinegar, and baking soda, Tide Washing Machine Cleaner penetrates & lifts away odor-causing residues at their source. HE washers today use less water than traditional washers, which can lead to residues from laundry soils, detergents, and hard-water minerals being left behind in areas you can't see.P&G