I was recently asked about a spider infestation in a member's home. Although I don't usually deal with this type of infestation, I will address this one.
As with any spider, spraying is generally frowned upon. As I understand it, you essentially have to spray a spider directly in order to effect control. Seeing as though these are not typically colonial pests, this makes the application of pesticides difficult and not efficient. I have found glue boards to be a more fiesable way of controlling the number of spiders found in your home. You can place the glue boards in areas that contain the most encounters, or you can simply scatter them throughout, placing them in the corners of rooms or against a wall.
Remember to always use care when using glue boards. Be sure not to allow pets or children to come into contact with them.
Here is a brief overview of the Brown Widow spider:
http://www.venombyte.com/venom/spiders/brown_widow.aspThis particular spider infestation was classified as being Brown Widows, but I will pst pictures and analyze them when I recieve them.