Brown Recluse

Loxoceles arizonicus

The Arizona Brown Spider is a very nasty critter indeed.  Bites from these spiders can produce tissue death.  While fatalities are uncommon, the reactions to these bites are quite painful and provide long lasting side effects. 

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This spider is typically found in cracks of walls, houses, and other buildings.  They can also be commonly found underneath rocks.  

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If you suspect that you have seen these nasty spiders, it is encouraged that you spray regularly to reduce the possibility of colonization.