Advantage flea medicine holds the advantage over other flea products by allowing you to wash your dog very soon following a treatment. Another good point is that you don't have to wait up to two days (like other products may require) to apply the flea treatment due to an unwashed pet. So feel comfortable knowing that you've chosen a product that works and is convenient.
Sure you can wash your dog after using Advantage Flea Medicine, however, its suggested that you wait at least two days after applying the medicine before giving the pet a bath. Otherwise you will remove the medicine and it will not be effective. Also just make sure you are putting in on the pets skin correctly.