It is generally recommended to wait at least two weeks after flea treatment before giving your pet a bath. This ensures that the treatment has had enough time to work and that all the fleas have been killed by the medication. Additionally, it is important to ensure that your pet’s fur is completely dry prior to bathing, as water can reduce the effectiveness of some treatments. After two weeks, you can safely bathe your pet with warm water and a mild soap or shampoo designed specifically for use with flea control. Make sure not to use any products containing pyrethrin or permethrin, as these will interfere with the effectiveness of many flea medications. It is also recommended that you thoroughly brush their fur before giving them the bath and rinse away all traces of soap afterward. Finally, make sure to reapply flea prevention products after each bath in order to ensure complete coverage.