Do ultrasonic pest repellers actually work on spiders?

I haven't heard good things about the ultrasonic repeller, either. My mom swears by this spray called SpiderRepel. She always uses it and she gave me a bottle to try. It's pretty good stuff. The ingredients are all natural, if you're worried about spraying chemicals in the house. I know you said bending/reaching can be difficult, but I thought I would offer my advice anyway. I hope you get rid of your spiders! =)