Pest Control Denver: $100 to $600 a Visit + CO Rules (2026)

We found no Denver price from a publisher we use. Every row is a national figure and is labeled that way; the company that answers quotes its own first-visit or inspection fee before anything is booked.

Do this now, before you call a Denver exterminator

1. If someone has trouble breathing, swelling of the face or throat, or dizziness after stings or bites, call 911. Everything else below can wait a few minutes.
2. Photograph what you saw and where: the insect, the droppings, the mud tube, the bite pattern. Keep a dead sample in a sealed bag if you can. A company identifies the pest before it prices anything, and NC State's advice for bed bugs applies everywhere: ask the technician to show you a live specimen from your home before you accept a treatment.
3. Do not spray store-bought products over the area first. Repellent sprays scatter roaches into new rooms (UC IPM) and hide the evidence a company would use to find the source.
4. For mouse droppings in a shed, cabin or closed-up room, do not sweep or vacuum them dry. Denver's health department notes Colorado is among the five states with the most hantavirus cases (864 nationally from 1993 to 2022, per the CDC); ventilate, wet the area down and wear gloves, and let a company handle a heavy cleanup.
5. If you rent and suspect bed bugs, notify the landlord in writing or electronically and keep proof. Colorado law (C.R.S. 38-12-1002) gives the landlord 96 hours from that notice to have a qualified inspector look at the unit.

Is it urgent? What counts as a pest emergency in Denver

Three situations are worth a prompt call, and none of them is a verdict on your house: a wasp or hornet nest at a door, a deck or a play area; rodents inside a home with young children, since mice and rats gnaw wiring and contaminate food; and winged termites or shed wings inside the house, which Texas A&M and NC State both describe as the usual sign of an active colony in or under the structure. Denver's urgent cases are rodents, which Denver's health department confirms by live or dead animals, burrows, droppings, gnaw marks and rub marks, and wasp nests at doors and eaves; a company would trap, find the entry and quote the sealing.

Everything else, a few ants at the sink, an occasional roach, a spider in the garage, can wait for a normal booking. HomeGuide's one-time visit range of $100 to $600 covers the ordinary cases; the high end belongs to bed bugs and termites, where the first visit is usually an inspection with a written quote.

Mice and rats in Denver: what the city confirms and what owners must do

Denver's Department of Public Health and Environment inspects public property and alleys for rodents and confirms activity by live or dead rodents, active burrows, droppings, gnaw marks, rub marks along walls, or harborage such as piled trash and clutter. Its rodent page lists Norway rats (tail shorter than the body), roof rats (tail longer), wood rats and mice for the Denver area. A mouse fits through a dime-sized gap and a rat through a quarter, so a company's first visit is a search for those gaps around foundations, garage doors and utility lines, plus traps; HomeGuide's national ranges are $150 to $550 for mice and $150 to $600 for rats.

Denver's owner rules are specific: keep trash, recycling and compost bins indoors or secured behind fencing rather than in the alley, seal gaps in sheds as well as the house, remove dense low shrubs that harbor rodents, keep bird feeders off the ground and away from doors, and do not use rodent poison in a home or garden without consulting a pest professional. Never pour bleach or poison into burrows, the city warns, because it reaches drinking water. Denver 311 handles city garbage can repair and replacement. More on mouse exterminator cost and rat exterminator cost.

Bed bugs in Denver rentals: the 96-hour rule

Colorado's bed bug statute sets the clock. Under C.R.S. 38-12-1002 a tenant notifies the landlord in writing or electronically, and within 96 hours the landlord must have a qualified inspector examine the unit; a confirmed infestation triggers inspection of the contiguous units as promptly as practical. Section 38-12-1004 requires 48 hours' notice before the landlord enters for inspection or treatment, makes the tenant responsible for preparing the unit, and bars dumping infested furniture in common areas. Section 38-12-1005 prohibits renting a unit with bed bugs, and the state's HB 19-1328 requires commercial applicators to notify landlords and tenants of bed bug activity and give remediation instructions. HomeGuide prices bed bug work at $300 to $500 per room nationally; see bed bug treatment cost.

Termites in Denver: real but uncommon

CSU Extension's PlantTalk says damage by termites to structures in Colorado has not been very common compared with warmer, wetter states. The most widespread species is the aridland subterranean termite, found through most of the state below about 7,500 feet and very common on the eastern plains, and CSU says infestations are rising where irrigation and downspouts wet the soil next to foundations or where fence posts and stumps are buried. Winged termites indoors still mean a colony, and CSU reads moist mud tubes as active and dry, crumbling ones as old. A company would check downspout discharge, wood-to-soil contact and the foundation line before proposing a liquid barrier or baits, which CSU notes cost more and act slowly. HomeGuide's national range is $225 to $2,500 per treatment and $0 to $250 for an inspection.

Check a Denver pest control license with the state

The Colorado Department of Agriculture's Pesticides Program licenses commercial pesticide applicator businesses and their qualified supervisors and certified applicators. The public Pesticide Applicator Search lets you check a company or individual, and the department notes its licensing moved to a new system on July 1, 2026, so a record that does not appear is worth a phone check at 303-869-9000. Colorado's Pesticide Sensitive Registry notice rules apply to termite and other wood-destroying organism treatments. Denver's housing, a 1975 median per the Census, is old enough that a company would spend part of a first visit on entry points.

Local pest rules and contacts for Denver, from official state, city and county pages unless marked.

More Denver repair guides

Mice come in where the house meets the ground: roof repair in Denver for attic entries and an electrician in Denver for chewed wiring. Damp basements: mold removal in Denver and a Denver plumber. Compare pest control in Dallas and pest control in Charlotte. All pest pages: pest control. Calls go to an independent pest control company that serves your area and takes this kind of job (how calls work).