Washing Tennis Balls
Wash tennis balls by hand by filling up a bucket with warm water and dishwashing soap or laundry detergent. Drop the balls into the soapy mixture and rub the outside felt of the balls clean with either your hands or an old sponge. Use a hose or a sink to rinse the soap from the ball and then use a dry rag for drying. Tennis balls can also be washed in a washing machine. The balls can be then thrown into a dryer, and are commonly added to dryer loads to soften fabric, but they will also dry quickly with just the spin cycle or by being rubbed over with a dry rag.