First off, Welcome! Please go into your profile and update your location so we can tailor our answers to where you actually beekeep.
As for the wax moth damage, just clean everything out down to the bare frames and start over again, since the bees have been lost. The new package will clean up anything you miss. Make sure you close down your entrance next time so the bees have a smaller opening to defend, at least until they get their numbers up!