Pest control in Maine is carpenter ants in wet wood, and then mice when the cold arrives. Ants move into sills and joists that fog, a bad gutter, or a coastal wetting keep damp, from the south coast through the midcoast. Mice take over capes and farmhouses inland as soon as the nights harden, and they do the same on the shore. Cluster flies fill attics. Squirrels use soffits where the woods or the spruce hedge touches the house. Say what you saw, not a species you only suspect.
Powderpost dust in an old beam is not an ant. A pile of wings needs a description. A southern termite script is usually the wrong script in this climate. Bats in a gable need the slot closed. A raccoon in a chimney needs a cap. Describe droppings, dust, or the dawn noise. The entry is often a gap at the sill, an unscreened vent, or a rotten corner you can already poke. Barns and sheds reinfest the kitchen if they are left out of the story.
Spraying the trail and leaving the wet sill brings the ants back, and on this coast the sill may be wet because wind drove water into the wall. Mention that. Trapping mice while the bulkhead stays open brings them back. Woodpiles against clapboard, bird seed, and a crawl open to the fog are the partners. Pets and children change the method. Activity that starts when you turn the heat on is a clue worth saying out loud.
Island houses and houses closed for part of the year still need the outbuildings included. Spring swarm and midwinter scratching are different visits. You do not need to catch the animal. You need the room and the gap. If the ants and a roof leak arrived together, say both. The insect is often the messenger for a trade that also has to dry the wood.
Give the town, coast or inland, and when it started. Note the kind of house and the hole you can see. Mention a barn if you have one. Call the number on this page.