However, they do not always end up in suitable places. Ships have reported spider landing as far as 200 miles out at sea. Aerial surveys have found them at altitudes of 14,000 feet. In historical times, when there was no explanation for ballooning, many theories were invented. Others theorized that spiders might be assisted by electricity.
Spiders use their venom as a defense mechanism and to immobilize their prey.
There are two classes of spider venom, neurotoxic and cytotoxic. The first affects the nervous system, with the other causing damage to the tissues. When they bite, they jab their fangs into the skin, injecting venom through their fangs. All spiders at venomous, except the family Uloboridae, yet most of the venomous spiders pose no threat to humans. In our geographic area, there are two spiders we are concerns with - the Black Widow and the Brown Recluse.