I have friends in Minnesota. Could you help me get rid of the spiders that I get in my bathroom every summer?
If the spiders are small, they may be the babies of previous spiders. You will need to eliminate the nest areas. In addition to possible "insecticides" you might consider caulking with a non-expanding foam to fill cracks and so forth.
If the spiders are large, they are hunting prey and nesting grounds. Then you woould need to seal your home against the little intruders. Caulk again. Another thought is the dry powder irritant used against cockroaches. It is based on boric acid (a very mild acid which can be purchased in dry form from drug stores.)
I usually trap the spiders and evict them to the garden area where they are supposed to be. The more aggressive ones get handled roughly.