Natural control for small gray spiders?

Every spring/summer I get an infestation of very tiny gray spiders. They are always on the ceiling in my home. I am looking for a natural way to get rid of them as I don't want to use pesticides in my home. I live in Minnesota and have never experienced this problem in any other state. I need to use something non toxic to both people and pets. I have been using an oreck bug vac but would like an alternate solution.

Answers:
Use your shoe.

Other answers:
moth balls?
moth balls?
well i was told by my bug killer guy that spiders can only be killed on contact. so i guess a BIG SHOE
if you get some hedge balls from hedge trees and put them around and under you house this will help keep them away. Don't know why but I know it works.
I live in New England and we get hit by them every year the first two weeks in July. I keep fans on and lights off as much as possible. I have never found a way to get rid of them. I use a vac too to clean up at night and in the morning. They're miserable!
I live in Massachusetts and I also have them this time of year!
I use a swiffer around the ceiling to take down the webs that form like cocoons in the corners and wipe down the spiders.
The spiders don't really bother me though, If I lived alone I would leave them alone. No harm done, and they eat fruit flys and fungus gnats so prevalent this time of year!
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