Our house is old, not junk old but old, we had a ton of spiders mostly Hobo's when we moved in, who ever lived here before must not of cared about all the cracks that let drafts and bugs in, there is a very big crawl space under our livingroom as someone somewhere along the line added more livingroom on. We have sealed all the cracks we can, but we are obviously not getting them all, this house is old and we will never get them all. Since we did all the sealing we have cut down on the spiders alot, but there are still some, mostly in the basement, sometimes the odd one makes it upstairs, they are mostly Hobo's which are not good spiders, is there anything I can use to get rid of them or deter them?