I hope the owners of www.beeworks.com won't mind me advertising their site, but I just called them today, and apparently they have just received a shipment of Certan from Germany. Certan (actually, I think it's been renamed to "B401" or somesuch nondescript name) is the name for the type of BT that's effective on wax moths. I've heard that this stuff is hard or impossible to find in the USA, so I thought I'd pass along the info. From what I gather, you dilute the stuff 1:15, put it in a sprayer, and just spray the frames. One bottle (about $20) will do 100 frames, making it pretty expensive if you've got alot of hives. On the plus side, apparently it works both as a curative as well as a preventative. Hope this helps someone who has wax moths.