I just removed a hornets nest they built in a few days on the SIDE of our MH. Right on the site , and included the awning end that unlocks. I use 2 cans f the spray 25 ft. stuff, then it took most of a day to remove the nest, starting with a water hose and nozzle. Next day the were 8 that returned to re-make the nest, Mass Murderer me got them with another shot of spray 25 ft. stuff. To top that 2 days later I was cleaning brush in the lower 40 and ground wasps got me really good, I waited till dark and murdered them too, but this time I got the whole nest at once. I reckon it is the season...and I will keep a good supply of spray handy.