I was wondering if these spider/pest plugs have any negative impact on herps?

Something similar to this: http://www.electronicpestrepeller.co...ltimate_at.htm

I am not really a fan on sprays, and we have had a bit of a spider epidemic this year. My wife is horrified of them so that does not help.

Just wondering if these gadgets would have any negative impact on my collection?

Probably should add...do they work?