You didn't have to burn the gear, but absolutely, wax moth cocoons will actually 'eat' the wood away. It leaves a divot. A couple days in the florida sun will help greatly as long as you discard the wax/comb. And I do mean...like...double bag, and get rid of the combs! Don't leave damaged frames to touch one another, like in a pile. Bake them is the sun. As far as hive beetles...you got lucky...they make a DISGUSTING mess! Your hive got weak, and our two worst enemies down here got the best of what was left. The hive probably went queenless, and before you realized, the hive started to decline, and the bastards took over. I lost a deep hive and a full super of honey to SHB in a WEEK! NASTY suckers! I love the sound of a smashed hive beetle under my thumb! Sorry for the loss, but it is Florida beekeeping! I have virtually no Varroa...knock on wood...but SHB and Wax moth....errgghh!!! Just make sure you keep all 'waste/discards' firmly bagged and chucked! And do the removal of comb on sweep-able surfaces! Remember...those larvae need the ground to pupate in....Use a concrete surface and let the larvae squirm and bake in the sun. (No...I have never had to do it....ha!) It's GROSS. NASTY suckers!