Spiders in Miami Homes
Most spiders found in Miami homes are harmless — wolf spiders, jumping spiders, and orb weavers are common and pose no medical risk. However, two medically significant species are present in Miami-Dade:
Southern black widow (Latrodectus mactans): Found in garages, under decks, in utility boxes, and in outdoor storage areas. The red hourglass on the abdomen is the identifying mark. Venom causes muscle cramping and systemic symptoms; medical attention is warranted for bites involving children, the elderly, or anyone with underlying health conditions.
Brown recluse (Loxosceles reclusa): Found in undisturbed indoor areas — closets, behind stored boxes, inside shoes and clothing left on the floor. The violin-shaped marking behind the head is the identifier. Bites cause necrotic skin lesions that can be slow-healing and severe.
Treatment Approach
Physical removal of all accessible webs and egg sacs — including the next generation of spiders. Web removal from eaves, corners, garages, and around exterior lighting fixtures.
Residual insecticide applied along the foundation, around window and door frames, along eaves, and in garage and storage areas. Spiders walking through treated surfaces pick up the product.
Inside the home: treatment to corners, closets, under furniture, and in storage areas where brown recluse and black widows are likely to be found undisturbed.
Spiders follow food. We assess and treat the underlying insect population providing a food supply that sustains the spider population — reducing spiders long-term requires reducing their prey.