C.O.
You can buy the wax buds to put in his ear...they seal it from getting water from the shower or the pool/beach into the ear canal - LOVED them!! They come in funky colors so you can see that they are still in place.
The first time using the "molds" is a little funky - at least it was for me - but the second time was a snap!!! Go to your local pharmacy and ask for the ear buds or wax seals for ears..they will help you!