With over 500 species of spiders in Wisconsin, you can expect some to be dangerous. While most spider bites are usually the result of defensive or accidental contact with humans, a spider bite can be very unpleasant, uncomfortable, and can irritate your skin. The major concern with a spider bite is the venom that is injected into the victim. Most spiders are harmless, but if you feel like one of our eight-legged friends could pose a threat, don't hesitate to call Critter Gitters.