Me and a couple of guys cleaned out the vents in our 1st 2 buildings and sprayed with WD40, will let you know how it works out, but have a new plan for those suckers, LOL
I have the same product as the guy in this video.
In this second video the guy basically does the same thing but he uses those small cans of cat food and uses Frontline Plus which is cat and dog flea and tick thing which contains fipronil and he puts 4 drops per can of food. Cheaper to buy the stuff in first video.