can you put your location in your profile.
after much reading about foundationless, i have stopped using foundation except at times as a guide at the top of the frames. i allow them to draw their own, which has some perils, but also lets them make exactly what they need.
saves me some money too :-D
as for your chewed foundation, if it is still secure in the frames, i'd let them rebuild it. if it's sagging or broken to the point where the bees will mess up the comb trying to draw it out, you might want to save yourself the mess and replace it.
if foundationless sounds at all appealing to you, you can do a search on here and you'll find lots of info/debate about it.