When can your cat have a bath after neuter?

You shouldn't need to give your cat a bath at all. Cats are very good at keeping themselves clean. However, if you must bathe a cat you should wait at least one week, but preferably two unless a vet tells you otherwise. You need to allow him to completely heal and that includes on the inside where we cannot see. If you bathe him too early, while struggling he may rip open an incision below the skin surface.