After the last spray, although we initially saw some dead bugs and dying bugs for a couple weeks they were eliminated until just before this spray when the ants reappeared.
As to the mice, however, the first technician placed one bait in a location that was left unused without really looking for entry locations. The second technician did a great job finding possible entries and placing multiple baits and although we had to supplement with D-con because they ate all that bait and it took about a month they FINALLY all seem to be gone. Mouse excrement on all your eating utensils, children's toys and cookware is NOT tolerable.