One way to store frames of drawn comb after the honey collection season is over, is to stack the supers with frames in the garage, tape all openings, place a plate of mothballs on top of the frames of the top super, and seal the top. A large plastic bag over the whole setup is also recommended to make it airtight and thus retain the fumes from the mothballs more effectively. This method would stop wax moths from laying eggs, but might not keep rats and mice from gnawing through the supers to get at the frames with remnant honey.

Another method I read about is to use a "hive mat" over the brood boxes and to stack supers of empty comb on top of that -- the idea being that the hive mat will allow the bees to clean these boxes and thus keep the wax moth under control, yet keep the hive reasonably warm during the winter. The website

http://www.bindaree.com.au/hints/hint3_hive_mat.htm

only recommends stacking one super over the hive mat. Does anyone have experience using hive mats, and were you able to successfully stack more than one super above the hive mat without getting wax moth damage?