The best practice for cleaning the jet nozzles and shell of your tub is to use a mild, non-abrasive, acrylic safe liquid cleanser. We have found in the past, Fantastic or Simple Green have made acrylic safe products, however, you will want to confirm any product is safe for your bathtub by reading the back of the label thoroughly. After you clean the tub, we recommend using Maguire's #10 liquid detergent solution.