Dr. Robinson gave us a solution, which is mostly alcohol, but has something else in it (can't get my hands on the bottle right this second), but he said to put a squirt in each ear after we bathe them or they go swimming. It helps to dry the excess water out of those floppy ears. We also use it when we clean Murphy's ears.

I just went and found the bottle. It is called "Oto-Dry". I think it has to come from the veterinarian, but we haven't had ear problems with Honey and Lilly since we started using it.