Every year we get a nest, or two, of Yellow jackets somewhere in, or around Our yard/house.
Evil little bastards!
I've used sprays and foams, but the two things that I've found to kill any kind of creepy crawly/flying things are:
(A.) "Dusting" You used to be able to get "Dursban" based dust. This stuff really kicked the crap out to ANY bug, and kept on doing it for MONTHS!, but now that it's been banned, you'll be looking for a "Pyrethrin"(Made from chrysanthemum plant extracts) based dust. By using a "Duster" you'll blow the dust into the nest, where the insects will track through it and ingest it when they clean themselves= Very Dead Bugs! The Pyrethrin based dust isn't effective long(The artificial versions last a little longer) . Some of these might have a few added chemicals to inhibit eggs, or keep them effective longer, or give them better "Knock down" power.
(B.) Pyrethrin based sprays. These sprays are great for the fast knock down power that they show when used on creepy crawlys! Most of your "Wasp & Hornet" sprays use these chemicals. They are fast acting, but short lived.
There are many other things that work, brake cleaner, starting fluid, Lysol & a lighter...... But test out what you are going to use, on what/were you are going to use it...... first!
Tall Shadow