Pest control in Detroit starts at the first hard cold, when mice use a sill gap, a garage door, or a cable hole. Alleys give rats a route to a loose foundation vent. A kitchen drip feeds cockroaches. Carpenter ants take porch wood and fascia that ice dams keep wet. Name what you can point at, including droppings, wings, or a night scratch.
Closing the hole, drying the wood, and taking away the food outlast a baseboard spray. Do not stir attic droppings through the rooms. Say whether a return visit is included if activity continues. A line of ants can start at a leak, so mention a soft sill or a sweating pipe. Rats using an alley vent are an entry problem, not only a trap problem.
Cluster flies in a sunny upper window are not cockroaches under the sink, and neither is a mouse in the kitchen. Sawdust at a wet porch post often means carpenter ants. Mud on a basement wall deserves a plain answer about what made it. Grease along a sill is a rodent sign. Do not fog the rooms before you call, or the trail disappears.
Clay basements stay damp, and that damp keeps pests comfortable. Wood piled on the foundation and clutter on the alley wall give cover. Say if activity spiked at the first freeze or during a wet spell. Mention pets and children first so the work fits the rooms you use. A drain that never quite dries is part of the same story.
Say the pest, the room, and whether this is the first time. Termites are not the headline in this cold city, so describe what you see instead of guessing a southern problem. Keep a note of when you hear them. Do not sweep the evidence away before you call. A photo helps after someone picks up. Call the number on this page.