|brown recluse spider|
The term "wandering spider" is not a taxonomic classification but rather refers to this more active, hunting behavior. Two wandering-type spiders in particular, the brown recluse spider and the hobo spider, are noteworthy because they are also venomous.
Sticky Spider Traps
Sticky spider traps are generally considered to be the best way to reduce the number of venomous, wandering-type spiders in homes. Not only are traps effective but since they contain no pesticides they are very safe to use.
Sticky traps are very simple, consisting of a cardboard tube that is partly coated inside with a sticky material. The spiders wander into the tube at one end, but never make it out. Traps are inexpensive but can also be home-made (see Making Sticky Spider Traps). Place traps along walls where spiders tend to move and behind furniture. Replace traps when they become full of debris.
Foundation "Perimeter" Treatment
If you are finding more than just the occasional spider indoors, or you are especially sensitive to them, consider treating the exterior of your home with an insecticide barrier. This barrier will slow the movement of wandering-type spiders from outside to inside. To establish the barrier you'll need to spray a 6"-12" band of insecticide on the foundation starting from where the house siding ends to the soil (this is sometimes called a "perimeter spray"). Onslaught Microencapsulated Insecticide is a good choice for this application because the microencapsulation makes it long-lasting compared to non-encapsulated insecticides.