The bag should be disposed of outside. Webs should be removed so that potential spider activity can be monitored in future inspections. Pesticides labeled for spider control are warranted for serious black widow infestations. Spot treating corners in a house with a labeled pesticide, and dusting crawl spaces are some techniques available. Enlisting the services of a professional pest control operator is an option to be seriously considered for black widow infestations.
Most spiders have eight eyes, but the brown recluse has six eyes arranged in a distinctive pattern.
This eye pattern is the most helpful in identification, more than the violin or fiddle shape on the cephalothorax. Brown recluse bites are different from black widow bites. Recall that black widow bites are neurotoxins that affect the nervous system. Brown recluse bites are cytotoxins that cause tissue death or necrosis of the bite area. Often the bite itself is unnoticed.