Yes, keep stomping them, everyone! We were recently in an edge-of-woods location, and their numbers were astounding. Stomped as many as we could. They were flying around erratically, landing on our clothes, arms/head/neck, it was gross. Had to be extra careful to not let any in the car.
I hate when I feel one land on me somewhere, or fly into me and bounce off... also seeing all the smushed carcasses on the ground here and there isn't exactly pleasant either.