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Not sure if this is the correct forum, but I posted this in the Garden forum as well. Please delete if this thread is not suitable here.
There are number of yellow jackets that are entering up a hole in the metal frame of a sliding door. I used a spray but that doesn't seem to have helped... ...probably because the spray dripped down from the hole/metal on to the deck floor. Is this a job for a pest control company? I have read up on using a shop vacuum to suck out all the yellow jackets and then sealing the hole with a caulk... ...not sure if this will ensure all the yellow jackets to leave. Last thing I want is to force them to enter the house!
Please advise if there's anything I can try before calling in the experts!
I'd be worried that they already have or will create another entrance/exit and could start attacking you while you're working on the hole.
That being said, a foaming spray may do better especially if you can direct the nozzle upward which is most likely the direction of the nest. I'm sure DE (diatomaceous earth) would wipe them out if you had a way to get a whole mess of it in the hole and onto the yellowjackets/nest.