Their Predators. Spider mite destroyer lady beetle — Both the larvae and adults of this tiny black beetle feed on spider mites. Each destroyer can eat up to six spider mites daily. Lady bug — The adult lady bug is a big eater, consuming up to 100 spider mites per day. Spined soldier bugs — This member of the stink bug family preys on spider mites as well as other garden pests, including cabbage loopers, flea beetles and Colorado potato beetles. Lacewing larva — In its short lifespan of two to three weeks, one lacewing larva can consume up to 11,200 spider mites.