The ball pit fabric cover is removable and washable.  We recommend hand-washing the fabric or machine-washing only on a delicate or gentle cycle.  Wash cold by itself and hang dry to prevent shrinking. Please note the foam is not washable and we do not recommend using a dryer setting for the fabric. For small spills or stains, we recommend spot cleaning with a moist cloth or a carpet/upholstery cleaner.  Any household carpet and upholstery cleaner will do the job. We also recommend washing all the balls just in case any residue from shipping or making them is left.