Deaths from brown recluse spiders have been reported only in children younger than seven years. Brown recluse spiders are native to the Midwestern and Southeastern states. Documented populations of...
Brown recluse spiders are not poisonous. They are VENOMOUS. Venom is injected. Poison is drank/eaten. The venom can kill you in about a week if left untreated.
The quick answer is insects, live insects, dead insects, both small and large. They feed on them all. There are very few insects that a brown recluse spider will not eat.