We live in the country. When we moved in 6 years ago, we had lots of pests - mice, wasps, and ants. We hired Abell to control the situation. It took a month or so to get rid of the mice, and we no longer have an ant problem, since they spray for them every year. Our house is wood so it's great they got rid of all the ants.
We still get the odd mouse in the house, but Abell takes care of that every Fall. Although they sealed up most of the possible mouse entrances, there's a section under our deck that is inaccessible (without total deck removal), but Laurie and the Abell team take care of any mouse invaders. They are always polite, and on time.
I highly recommend the annual contract if you seem to have an ongoing problem.
Mike M