For inverts there are only a few safe options. To prevent a infestation, a lot of inverts come with their own mites and almost all feeders come along with non harmful mites that feed on scraps and waste. Harmless but not fun to see.
1. Keep the cage dry, not always an option.
2. Keep very good cleaning habits.
3. Isopods to help clean what you miss.
4. Preditory mites. (Refona.de), may also eat your Isopods.