Keep the spiders out
What Kind of Spiders Should I be Worried About?
The main offenders here in Arizona are the Black Widow and various types of Recluse spiders.
How Do You Eliminate or Prevent Spiders in Your Home?
First and foremost, it is important to keep your home clean and free of clutter. Spiders, especially Recluse spiders, like to hide in small crevices and places that are rarely disturbed such as among belongings in your garage, shed or crawlspace.
Insect predators, such as spiders and scorpions, will be found in greater numbers where there are a great number of other small insects for them to eat, such as crickets, cockroaches, silverfish, etc. Therefore, insecticide and other pest control measures not only work on the spiders directly, but indirectly by eliminating their food source in your home.