Well I don't buy the bug zapper stuff. I suppose it'll get a few but if it were effective we'd instead have a thread discussing models of zappers and their relative benefits. I will add that freezing frames can be effective to control wax moths so long as their post-freezer storage is also cold and / or closed off to flying moths. I use BT because I can't guarantee that. If you freeze frames (and let's assume the freezing is 100% effective) you still have to button them up to prevent them from becoming infested again. My barn is nice and cold MOST winters. It's the ones between MOST and ALL that I've had problems when I didn't use BT.