Other than a healthy hive what can I do?
That is the key. A healthy hive should have no problem defending off wax moths. I would be worried about the state of your hive if you have wax moths actively destroying comb in the same frames that have brood. You might consider removing any excess super or brood boxes and consolidating them down to an area that they can manage. If it is a weak hive, they will not be able to protect but a small area.