Mice and rats move indoors on a schedule. The first cold nights of fall push them toward anything warm, and in a town where a lot of the housing stock is postwar brick with block foundations, detached garages and unfinished basements, there is rarely a shortage of ways in. A gap the width of a pencil is enough for a house mouse. A rat needs a hole about the size of a quarter, and it will make one bigger if it is close.
Droppings are the fastest tell. Mouse droppings are small, dark and pointed at the ends, scattered along the backs of cabinets, under the sink, in the silverware drawer, on joists in the basement. Rat droppings are noticeably larger and tend to cluster where the animal feels safe. Scratching inside a wall cavity at night usually means mice; heavier thumping in the ceiling, especially in a house with a crawl space or a low attic, can mean rats or something larger. Grease marks along a baseboard, chewed cardboard, shredded insulation, a sweet-sour ammonia smell in a closed room — those all point the same direction. If you have one mouse in a trap, you have others. They do not travel alone.
A proper rodent job is three things in sequence, and skipping any one of them is why some people trap the same mouse problem every autumn for years. First, an inspection that goes where the rodents go: the sill plate, the rim joist, under the deck, behind the dryer vent, the garage service door, around the gas line and the AC line set where they enter the wall, the soffit returns. Second, trapping and, where appropriate, tamper-resistant exterior bait stations placed on runways rather than scattered at random — rodents follow walls and edges, and a trap in the middle of a floor catches nothing. Third, exclusion: sealing the entry points with material that cannot be chewed through, which means copper mesh, hardware cloth, sheet metal and mortar, not expanding foam on its own. Exclusion is the part that ends the problem.
Price moves with the size of the structure, how many entry points there are and how hard they are to reach, whether you have an attic or crawl space that needs to be accessed, whether there is a rat population tied to a sewer or a neighbouring property, and how much follow-up trapping it takes before the activity stops. A tidy mouse job in a single-story ranch is a different scope from rats under a garage slab. Estimates are free, so you can get the scope and the number before deciding anything.
Ask whether the quote includes sealing entry points or only trapping. Ask how many follow-up visits are built in and what triggers more. Ask where bait will be placed if you have pets or small children, and whether it stays outside in locked stations. Ask what happens to dead rodents in walls. And ask whether the person doing the work is a licensed contractor — in Michigan that matters for pesticide application.
Night-Terror Terminators covers Roseville, Eastpointe, St. Clair Shores, Fraser, Warren, Clinton Township and Mount Clemens, with same-day service available. Enquiries are by phone, Monday to Friday, 8AM to 6PM.