saw a spider crawling across my ceiling, small but looked like one of those white tails my sister used to be upset about, sprayed it once it reached a corner, but it didn't seem to be effected so I had to keep spraying it again and again until it fell and I squashed it with my shoe. Started feeling naseus, probably the most bug spray I've ever inhaled in my life, wondering if it can do long term damage to you. Ecch.