The exterior of your washing machine can be cleaned with a mild detergent solution or all-purpose cleaner. Sponge and rinse any detergent residue or build-up off regularly. If you have problems with hard water, use a little water softener with the detergent to remove any built-up scale. The inside of the washer is best cleaned by running an empty full cycle of cold water and adding 2 cups of vinegar before the wash cycle begins.