I believe humans are not part of their diet. ;)
But they can process cellulose, starch and even mold, can survive months without any food, so it is next to impossible to starve them. Low room temperature and low humidity might help a bit.
But they can process cellulose, starch and even mold, can survive months without any food, so it is next to impossible to starve them. Low room temperature and low humidity might help a bit.