Updated: May 19, 2021
I keep a deep freezer in the garage for freezing brood boxes and honey supers. Any box that comes from the Apiary from a dead hive or after harvest get put in the freezer. Freezing frames kills wax moth larvae and hive beetles. You don't wake up one morning to have your frames destroyed by wax moths, which, has happened to me on more than one occasion.
I use a product that has been recently approved for use in the US. B402 Certan is effective and economical. I freezing my frames for at least 2 days. I pull the frames from the freezer and allow them to dry. I then spray them with B402. No more was moths!!!!
Don't use that other chemical, paradichlorobenzene....(wax balls)....it builds up in the honey comb.