ZAP-IT INSECTICIDE is a contact & residual surface, crack, crevice and spot insecticide spray. ZAP-IT can be sprayed on surfaces or on livestock. It kills ants, cluster flies, cockroaches, crickets, earwigs, silverfish, sowbugs, spiders, house flies, stable flies, horse flies, face flies, black flies, horn flies, mosquitoes, gnats & keds.