Washing machine walking around the room? For residents dealing with a "walking" machine, a pneumatic dampening method using a plastic bottle can stabilize the chassis without expensive repairs. The "pneumatic stop" method uses a closed, empty 5-liter plastic bottle as a dampening zone. Ensure there is a gap of 10 to 15 cm between the washing machine and the wall. Use an empty 5 or 6-liter plastic bottle with the cap tightly sealed.