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. For proper care of your machine, use Tide Washing Machine Cleaner once a month to help keep odor-causing residues from causing future odor problems. If your washer already experiences odor issues, use Tide Washing Machine Cleaner once a week for the first three weeks and once a month afterward. Clean clothes start with a clean machine. Happy cleaning! Note: Remove clothing or other items before using Tide Washing Machine Cleaner. For maintenance: Use Tide Washing Machine Cleaner once a month or clean & freshen your machine. If Odor Problem Or Visible Residue Already Exists: Use 1 pouch per week for 3 consecutive weeks following the instructions below. Then. continuing to use 1 pouch per month for maintenance. For a top load washing machine - Pour 2 pouch of Tide Washing Machine Cleaner directly into your washer tub. For a front load washing machine - Pour 1 pouch of Tide Washing Machine Cleaner into your detergent dispenser drawer. Run washer on "Normal" cycle with the hot water setting.