Pest control in Rhode Island follows damp wood. Carpenter ants move into sills that a bay storm or a bad gutter keeps wet. Mice use stone foundations and unscreened vents when the first cool nights arrive. Cockroaches persist in multi-family kitchens up the valley. Termites are a fair question in the warmer southern part of the state, not a story to invent for every pile of sawdust. Say what you saw.
Powderpost dust under old beams in a mill building or an ell is not the same as pavement ants at a slab. Rats use alleys, wharves, and loose bulkheads more than they use a dry cape on a hill. Squirrels in the soffit of a South County house sound large at dawn. Cluster flies collect in attics that face the sun. Wings on a sill need a description, not a guess that ends the call early.
Spraying a wet sill and leaving the leak brings the ants back. So does trapping mice while the bulkhead gap stays open. A woodpile against clapboard, bird seed on a deck, and a crawl that stays moist are the usual partners. Shore houses with damp crawls under the kitchen are a classic pair. Mention standing water. The insect is telling you about the building.
Mosquitoes off the marshes are a yard issue at the edge of the property, separate from a nest in the wall. Bats in an attic need the entry closed. Describe droppings, rub marks, and the room. Pets and children change the method. In a three-family the void may be shared, so say whether you speak for the building or one floor.
Give the town, the house, and when it started. After a soaking storm and after the first cold week are different clues. Describe the dust, the wings, or the droppings. Point to the gap you can already see. Call the number on this page.