What a rodent visit should include
A sound visit starts with finding where the animals are getting in and what they are eating, then closing the holes, then using traps or bait where the evidence calls for it. The EPA lists the signs as droppings near food, nesting material, and chewed holes in walls and floors, and recommends removing food, water and shelter and sealing holes with steel wool or a patch. The Michigan Department of Natural Resources (DNR), writing about small wild rodents, adds metal flashing or hardware cloth over openings, capped and screened chimneys, and sealing an opening after animals have left. DNR's page is about wild small rodents, and we could not confirm it names house mice or Norway rats, so treat its techniques as a general guide.
That means the visit price is only part of the cost. If the company treats and leaves the holes open, the next animals follow the same path. Ask to be shown the entry points and ask who closes them and with what.
Rodent control pricing: what we can show
Our estimate for rodent control in Michigan is $125 to $680 per job. It is a model, not a quote: one published national range, which is for rats and not mice, widened 15 percent each side and adjusted for what Michigan pest control workers are paid. Jobs run from one visit to a series, and the series is where the cost is, so the number of visits and who closes the entry points matter more than the first figure.
Under the estimate, the table shows the wage and state fees only. For quotes, ask what is included for sealing, how many visits there are, and how long the company will keep checking.
| Item | Figure | What it is |
|---|---|---|
| Estimated range, not a quote | $125 to $680 per job | Built from one national published range, adjusted by the Michigan pest control worker median wage ratio (0.98). No Michigan pest control company price is shown, because none of the companies we looked at published a regular price. |
| Pest control worker wage, Michigan median | $21.38 an hour | What pest control workers are paid (O*NET republishing BLS, May 2025), not what you are charged. Percentile data, not re-checked against the BLS table. |
| State fee, certified commercial applicator | $75 | Paid by the person, not added to your bill as a line. Michigan statute and MDARD agree. |
| State fee, pesticide application business license | $100 a year, expires every December 31 | Every company that applies pesticides for hire needs one, in addition to its applicators' credentials. |
How we estimate costs: the Estimated range row is a model, not a quote. It takes one published national range for this job (a cost guide from a third-party site that we have not verified and do not cite) and multiplies it by Michigan's pest control worker median wage ratio to the US (0.98, BLS May 2025 data read through O*NET OnLine). The wage and state fee rows in the table are what pest control workers are paid and what the state charges to license them, and neither is a price. We have not collected quotes, and we found no Michigan pest control company that publishes a regular price. Full method. Prices as of Oct 19, 2026.
Bait and poison: what EPA says and what it leaves open
The EPA says most rodenticides today are anticoagulants, and that deaths typically follow four days to two weeks after the animals begin to feed. That delay is why a dead animal in a wall can show up days after a visit, and why a bait job should not be judged in its first week. DNR notes that secondary poisoning of non-target wildlife is the responsibility of nuisance animal control permittees.
Troy's code enforcement office publishes a pest prevention page that argues against rodenticides because of secondary poisoning. That is the city's opinion rather than state law, so we do not present it as a rule. If you are choosing between a company that baits and one that seals and traps, the useful question is what each will do about the entry points.
Who answers a rodent complaint in your city
Cities route the calls differently. Grand Rapids' neighborhood guide says property owners are responsible for preventing conditions that provide a home or food source for rats and lists its proactive nuisance inspections in spring, summer and fall. Sterling Heights tells residents with rat problems to call City Development at 586-446-2360, and Warren has a Rat Problem request page, though we cannot say what that page tells residents. Check your city's page, then see the nearest city on our list, such as Grand Rapids, Warren, Sterling Heights or Troy.
What the company has to keep and give you
A company that applies rodenticide for hire must keep application records, and MDARD says general-use records include the product, EPA number, amount, target pest, date and location, kept for at least a year. You are entitled to the paperwork at the time of the application, including the product's common name and the label's precautions. If rodents are in a school, day care or health care facility, special notice and integrated pest management rules apply, covered in the paperwork guide.
Rodents: urgent or not
- Droppings or chewed packaging in a space where you prepare or store food: clean up, seal the food, and book the same week.
- A single mouse sighting with no droppings in food areas.
- Noises in a wall or ceiling that stop in daylight.
What to try before you call
- Put food in sealed containers and clean up spills and standing water.
- Find holes by looking along the walls and floors for droppings and chewing.
- Seal what you can reach with steel wool or a patch.
- Note where you see the signs and photograph them.
- Ask the company to show you every entry point it found.
License and rules for rodent work
MDARD's category 7D covers using pesticides against vertebrate pests such as birds, rats and mice, and 7A covers pests in and around dwellings. MDARD does not say "rodents need 7D" in one sentence, so ask the company which category its applicator holds, and ask for the company's business license number. EPA also tells you to ask to see the company's license and to call the state regulator with concerns.
Ask for the company's state pesticide business license number and the applicator's name, and look both up with your state's pesticide regulator before any work starts.
A tool for this job
Pest identification guide
Pick what you noticed and what you have checked. The guide names what that most likely is, using only the distinguishing features a government or university source gives, and says whether the sources point to a professional. It cannot identify a pest from a description with certainty, so treat the answer as where to look next. It runs in your browser and asks for nothing.
Open the toolQuestions people ask
How do I keep rodents away in Michigan?
Remove food, water and shelter, and seal the holes, using steel wool or a patch, according to the EPA. DNR suggests metal flashing or hardware cloth and a capped, screened chimney for small wild rodents, with the caveat that its page covers wild species.
What qualifies as a rodent infestation?
The EPA does not set a count; it lists signs: droppings near food, nesting material, and chewed holes in walls and floors. If you see those, act on the entry points and ask a company to inspect.
Is it worth getting an exterminator for mice?
It is when you cannot find or reach the entry points, or when you want bait handled by a licensed applicator. Sealing is the part that lasts, so ask the company what it will do about the holes.
How long does rodent poison take to work?
Typically four days to two weeks after the animals begin to feed, according to the EPA, which says most rodenticides today are anticoagulants.
Who handles rat complaints in Michigan cities?
It varies by city. Sterling Heights directs rat complaints to City Development at 586-446-2360, and Grand Rapids says property owners are responsible for preventing conditions that provide a home or food source for rats.
- O*NET OnLine: Michigan Wages 37-2021.00 Pest Control Workers (BLS 2025 data) Read Oct 19, 2026. Confirm with the source before you rely on it.
- PestControlMatch: how we estimate costs (editorial policy) Read Oct 19, 2026.
- MCL 324.8317 (Michigan Legislature) Read Oct 19, 2026.
- MDARD: Pesticide Applicator Business License (PABL) Read Oct 19, 2026.
- Michigan DNR: Small rodents Read Oct 19, 2026. Confirm with the source before you rely on it.
- MDARD: Pesticide Certification-Registration Categories (revised 08/2011) Read Oct 19, 2026.
- EPA: Identify and Prevent Rodent Infestations Read Oct 19, 2026.
- EPA: Restrictions on Rodenticide Products Read Oct 19, 2026.
- MDARD Regulation 636 Rule 15 summary; DNR IC2004-3 Read Oct 19, 2026. Confirm with the source before you rely on it.
- City of Grand Rapids: Neighborhood Living Guide Read Oct 19, 2026.
- City of Warren: Rat Problem (menu page) Read Oct 19, 2026. Confirm with the source before you rely on it.
- City of Sterling Heights: Damaging Wildlife Calls Read Oct 19, 2026.
- City of Troy: Pest Prevention Read Oct 19, 2026.
- EPA: Tips for Hiring a Rodent Control Professional Read Oct 19, 2026.