If you have a front loading washing machine like a lg or GE or whirlpool or Maytag or Samsung it has rubber seal and it is designed to keep water in the rubber seal between wash cycles and creating an environment and foul odors from the the water special when you are in suffern NY chestnut ridge NY nanuet ny or pearl river NY and all of rockland county that they have hard water you can call us at appliance medic will tell you how to prevent the issue