Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
I think the place to test anti-spider solutions would be the Great Salt Lake. I have never seen so many spiders in one place, and I've lived just about everywhere (the south, west coast, east coast, midwest, west, even overseas.) The Salt Lake Marina, in my unprofessional opinion, has more spiders per square foot than any other place on earth. Luckily, they're seasonal.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.