I'm in a similar environment. Our AC keeps indoors humidity around there, I believe, but even then I had at least a 10% deformation rate on beetles going through metamorphosis. Heat would have also kicked up the reproduction rate, at least it helped tremendously with the dubia roaches. Those...
KCNC06 has it. Freezing the bran is only going to delay those eggs hatching until ideal conditions, not kill them. You have to bake it. Baked mine and never had bug issues, though I have dealt with those little jerks before in other areas.
I gave up on mealworms because they weren't as...