I’ve sprayed a lot of em being in the bug business. But we used to use our mazda pickup that had a camper topper over our 100gallon termite rig. Run the hose via sliding window into the cab with me, crack the window and drive up within 25ft of the nest and let em have it.

About 50/50 the nest would soak and tear into pieces.

But I was also hitting with a pretty good stream of 60 psi