When washing mice can you use shampoo?

Yes You Can. But There Is Only One Type of Shampoo that You Can Use. It Is PPS. Hope That Helps. :) I personally see no harm in using shampoo while bathing a mouse. After all shampoo is just a type of cleaning agent that is used on hair or in this case fur. Shampoo also creates a lather that breaks up deposits of oil and dirt which is just right for an animal. So my answer for now would be yes you can use shampoo while washing a mouse.