I am trying to figure out where spiders are coming into my TC. It looks like there are air intakes on the unit inside the TC. Are there no fresh air intakes on these air conditioning units? ...
Go down to the feed store and get you some Tempo made by bayer, Its white milky looking stuff you mix like a table spoon in gallon of water and spray it. Best thing I ever seen, has long residual effect to. It will kill a spider weeks after it dries. Totally destroys fire ant too. Its expensive but it really works great. And does not take much, and is odorless , You will not be disappointed.