While wool has a natural ability to clean itself, from time to time your Gottstein slippers need a beauty treatment too. Step 1: Beating and brushing by beating the slippers you can easily remove accumulated dust. Many small stains and lint can then be easily removed with a hard brush. Step 2: Stain Removal our slippers are molded in pure mountain water, so they should never be completely soaked. Stubborn stains can easily be removed with a damp cotton cloth and a little mild soapy foam. Attention: Never dry in the sun or on a heat source.