The short version
Rodent control in Arizona has two seasons instead of one. In the Phoenix and Tucson valleys, roof rats and house mice push indoors during 106F summers looking for water and shade, then again in the mild winter. In cabins, sheds, and garages, especially in northern Arizona, deer mice matter because they carry hantavirus, and the state reported three cases in 2025. Sealing, trapping, and careful cleanup are the plan.
- Arizona's 106F summers drive rodents toward irrigated yards, pool equipment, and cool attics.
- Roof rats climb into dense trees and shrubs and enter Arizona homes at the roofline.
- Arizona reported 3 hantavirus cases in 2025, and northern Arizona is a plague focal region.
- Nine inches of rain a year means a dripping hose bib is a rodent water source.
- Every gap of 1/4 inch or more needs steel wool or hardware cloth, not foam.
This page is for homeowners, renters, landlords, and business owners across Arizona, from the Phoenix metro through Tucson to the northern plateau. If you have chewed fruit under a citrus tree, droppings in a garage, or scratching in the attic, this is where to start.
What to look for
With nine inches of rain a year and 35 percent humidity, water is the attractant in Arizona, and that changes where rodents go. Northern Arizona also sits in the plague focal region. It moves into cabins, sheds, and garages, and it carries hantavirus; the CDC's provisional count shows three Arizona cases in 2025. The deer mouse is the outbuilding concern, and northern Arizona cabins are a classic setting. Even a fairly tight block-and-stucco house can have a worn garage door seal or an open gap where air conditioning lines enter the wall, and that is enough for a mouse. The house mouse is everywhere, and it exploits any 1/4-inch gap, the width the CDC uses as its sealing standard. Winter lows around 41F do little to slow it, so attic populations can grow in every month. It climbs, nests in dense trees, shrubs, and attics, and feeds readily on fruit, so a Phoenix, Mesa, or Gilbert yard with citrus gives it both a meal and a ladder. The roof rat is the valley problem. Three rodents show up in Arizona's state data: the roof rat, the house mouse, and the deer mouse.
- 1Citrus on the ground with a neat hole chewed in the rind and the inside eaten out.
- 2Scratching or running in the attic in the evening, when roof rats start moving.
- 3Droppings around pool pumps, drip irrigation valves, and the base of a dripping hose bib.
- 4Grease marks on block walls, palm trunks, and the fascia where rats climb nightly.
- 5Chewed wiring or shredded insulation in the attic or on the air handler.
- 6Nesting material in a rarely used shed, RV, or the engine bay of a parked car.
Why it’s worth acting soon
- Roof rats breed through Arizona's mild winter, so an attic problem never resets.
- Chewed air conditioning wiring in a 106F summer means a failed system on the hottest day.
- Deer mouse droppings in a northern cabin become a hantavirus exposure when swept dry.
- Hantavirus, salmonellosis and rat-bite fever all appear on the CDC's list of illnesses rodents pass to people directly.
- Rats in pool equipment and irrigation boxes damage controls and drip lines you will pay to replace.
Treatment options and typical costs
Roofline and stucco exclusion
Quoted after inspection
A technician seals tile roof edges, gable and soffit vents, air conditioning line penetrations, and garage door gaps with hardware cloth, flashing, and steel wool. On a tile roof, the open ends at the eaves are a common roof rat entry, and closing them can be most of the job.
- Time
- Set after the inspection
- Best for
- Attic infestations, especially under tile roofs
Attic and yard trapping
Quoted after inspection
Snap traps set on attic runways and along block walls, citrus trees, and pool equipment, checked over several weeks. Trapping shows the population falling and avoids a rat dying in an attic during a 106F summer, a smell you will not forget.
- Time
- Several weeks of checks
- Best for
- Roof rats already inside; homes with pets
Exterior bait stations
Quoted after inspection
Locked stations along block walls, near burrows, and by irrigation lines, serviced on a schedule. Used where roof rat pressure comes from surrounding yards rather than one property. Ask which products the provider is licensed to use and where stations will sit relative to pets and pools.
- Time
- Ongoing
- Best for
- Heavy neighborhood pressure, commercial sites
Prices are typical published ranges. Ask what’s included before you compare quotes.
Cardboard boxes make easy nests and the gap under an overhead door makes an easy entrance. Plastic bins and a fresh door seal fix both.Which rodents will you find in Arizona homes?
The roof rat is the valley animal. Arizona's state data names three: the roof rat, the house mouse, and the deer mouse, and each belongs to a different part of the state. Identify which of the three you have and the plan follows: roofline for rats, garage for mice, careful cleanup for deer mice. The deer mouse is the outbuilding rodent, at home in cabins, barns, and sheds from the valleys to the plateau, and it is the hantavirus carrier the state's three 2025 cases point back to. On a block-and-stucco home, check the garage door seal and the line-set opening first. It nests in garages, wall voids, and stored boxes, and the CDC's 1/4-inch rule is the standard for keeping it out. The house mouse turns up in every Arizona city. Fruit is its calling card; a hollowed orange under a Mesa tree is a classic roof rat sign. Slim, long-tailed, and a strong climber, it lives in dense trees and shrubs and moves into attics through roof gaps and vents.
A month-by-month rodent timeline for Arizona.
Roof rats are raising litters, and temperatures are still pleasant enough that attic work is easy. March through May is the spring push in the valleys. Arizona's rodent year has two peaks. In the valleys, winter rarely gets cold enough to interrupt roof rat breeding. Up north, this is when deer mice move into cabins and sheds, and when a closed building starts collecting the droppings someone will find in spring. Nights cool toward 41F, house mice move into garages and kitchens across Phoenix and Tucson, and roof rats settle back into attics full time. October through February is the second peak. Some providers schedule attic work at dawn to beat the heat. Median highs near 106F send rodents looking for water and shade, so activity shifts to pool equipment, drip lines, hose bibs, and cool garages. June through September is the heat. This is the best time to seal.
A metal vent cover with a working flap keeps mice out all winter. Plastic flaps crack in the cold and get chewed open.What does the first visit from an Arizona rodent control company look like?
The roofline is where roof rats usually get in, so the technician should check every tile eave, gable vent, and roof-to-wall joint, plus the spot where palm fronds or oleander touch the house. Expect a lot of time on a ladder. A quote for an Arizona home that skips the roofline is a quote for a problem that comes back. In northern Arizona, ask specifically about deer mouse cleanup and whether it follows CDC steps with ventilation, bleach solution, and bagging. Ask for the list of openings found, the materials to close them, and the trapping schedule before they leave. Out in the garage, expect a look through stored boxes and around the water heater closet. They look for droppings on top of insulation, rub marks on rafters, and chewed duct or wiring near the air handler. Inside, the attic is the main event. On the ground they check the garage door seal, weep screeds, the air conditioning line-set penetration, and the pool equipment pad.
Hantavirus and plague: what northern Arizona homeowners should know.
The CDC's provisional table shows three Arizona cases in 2025, among 17 nationwide. Hantavirus comes from deer mice, and the exposure is almost always dust from dried droppings stirred up in a closed space. Two rodent-borne diseases are part of life on the Arizona plateau, and both are manageable with habits rather than fear. Plague is a rural northern concern; hantavirus follows deer mice into closed buildings wherever they are. Recent state numbers are low, at most one report in the previous 52 weeks and none year to date through late May 2026, but the habits matter: keep pets from hunting, do not handle dead rodents, and treat pet fleas. Plague lives in wild rodent fleas in northern Arizona, one of the CDC's focal regions. For a cabin with heavy contamination, hire a provider with respirators. Never sweep or vacuum. Wearing gloves, wet the droppings and nests with a bleach mix of 1.5 cups per gallon of water, wait five minutes, then wipe everything into a bag. Open the building and stay out for 30 minutes. The cleanup rule is simple.
What affects the price of rodent control in Arizona homes?
Attic work in a 106F summer may be scheduled for early morning and takes longer, and insulation soiled by a year of roof rat nesting often needs replacement. Heat is the second factor. Flat foam roofs with parapets have their own gaps at scuppers and roof drains. Every open tile end is a potential roof rat entry, and closing them around a two-story home in Gilbert or Chandler means real ladder time. On a tile roof, the eaves set the price in Arizona. A quote with scheduled return visits and a re-check of the eaves beats a cheaper one-visit job. Finally, the follow-up schedule matters because roof rats keep arriving from neighboring yards all year. Citrus, palms, and oleander have to be cut back from the roof before exclusion holds, and providers vary on whether they do that or leave it to you. The yard is the third. Ask whether that line is in the quote.
What affects the price
- Tile roof eave sealing, which is slow and needs a ladder on every side of the house.
- Attic access in summer, when providers may schedule early morning work because of heat.
- Insulation replacement after a season of roof rat nesting in the attic.
- Citrus, palms, and oleander that must be trimmed back from the roof before sealing holds.
- Deer mouse cleanup in northern Arizona, done with respirators under CDC rules.
- Length of follow-up, since roof rats keep coming from neighboring yards year-round.
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What is your biggest concern about rodents in your home?
When to call for help
In northern Arizona, call for any droppings in a cabin, shed, or garage that has been closed up, because deer mice there carry hantavirus and the cleanup needs ventilation and bleach rather than a broom. Ask the provider to walk the roofline and the tile eaves, not just the kitchen. Call a rodent control company in Arizona when you hear attic activity more than once, find chewed citrus under your trees, or see droppings near the pool equipment. Call before summer if you can; sealing in April is easier than trapping in an attic in July.
What you can do yourself
In northern Arizona there is a second reason to hire out: deer mouse droppings in a closed building are a hantavirus risk, and the CDC's cleanup steps are easier with the right gear. If you have trapped for several weeks and still hear noises overhead, the roofline is still open somewhere. For a couple of house mice in a Chandler garage, DIY works: snap traps along the wall, steel wool in the gap around the air conditioning lines, and a new garage door seal. Roof rats are harder. They live above you in the attic and in the palms and citrus around you, and the entry points are often roof ends and vents you cannot see from the ground. Trapping in the kitchen while the eaves stay open just cycles rats through. A professional brings the ladder work, the exclusion materials, and a plan for the yard.
Where you live matters
Northern Arizona holds part of the plague focal region, and deer mice anywhere in the state carry hantavirus; Arizona logged three hantavirus cases in 2025 and no plague cases year to date through late May 2026. That combination makes water the attractant and the attic the refuge, and it keeps roof rats breeding in every month. The arid valleys, where Phoenix, Mesa, Chandler, Gilbert, and Tucson sit, have median summer highs of 106F, winter lows near 41F, humidity around 35 percent, and about nine inches of rain a year. Arizona's cities in our data fall into two climate zones, arid and temperate. Where a lot has irrigated fruit trees or palms close to the house, the rat has food, shade, and a ramp to the roof. With a median home value near $416,500 across the cities, chewed wiring and soiled attic insulation are expensive to let slide. Money is part of the picture too.
Simple ways to keep rodents away
- Pick up fallen citrus every few days and harvest ripe fruit promptly, since fruit is easy food for roof rats.
- Trim palm fronds and oleander so nothing touches or overhangs the roof.
- Fix dripping hose bibs and leaking drip emitters, since water draws rodents in a nine-inch-rain climate.
- Close open tile roof ends at the eaves with bird stop or hardware cloth.
- Seal the gap around air conditioning line sets and the garage door bottom with steel wool and a new seal.
- In northern Arizona, keep sheds and cabins clear of stored food and bedding, and air them out before cleaning.
In a multi-unit building, mice move between apartments through shared walls and pipe chases, so treating one unit rarely solves it. Ask for a building-wide plan.Did you know?
Of the 17 provisional hantavirus cases the CDC lists for 2025, Arizona's three trail only California's four.
The CDC counts northern Arizona, northern New Mexico, and southern Colorado as the core of the U.S. plague region, where rodent fleas carry the bacteria.
Plague is on the CDC's list of diseases rodents spread indirectly, through their fleas, along with murine typhus and Lyme disease.
Questions people ask
What kind of rats are in Phoenix and Tucson?
It climbs, nests in dense trees, shrubs, and attics, and eats fruit, so yards with citrus give it an easy meal. It stays active through winter lows around 41F, so there is no off season. The roof rat is the rat named in Arizona's state data, and it is the one Phoenix and Tucson homeowners usually meet.
Why do rodents come inside during the Arizona summer?
With median highs of 106F and only nine inches of rain a year, a dripping hose bib, a pool pump, or drip irrigation is the wettest spot for blocks. Rodents follow that water to the house, then find the cool attic or garage through vents and line-set gaps. Water and shade.
Is hantavirus a risk in Arizona?
Exposure comes from stirring up dried droppings. Ventilate for 30 minutes, soak droppings in bleach solution, and never sweep. Yes, wherever deer mice get into closed buildings, which in Arizona often means cabins, sheds, and garages. The CDC's provisional table shows three Arizona hantavirus cases in 2025, among 17 nationwide.
Should I worry about plague from rodents in Arizona?
Northern Arizona is part of the plague focal region, and the CDC's weekly table shows at most one Arizona report in the previous 52 weeks and none year to date in 2025 or 2026 through May 30. Keep pets from hunting wild rodents and do not handle dead ones. Only in the rural north.
How do roof rats get into a tile roof house?
A roof rat climbs a palm or block wall, runs the fascia, and slips under the tile. Closing those ends with bird stop or hardware cloth is the main exclusion job on tile-roof homes in Arizona. Through the open ends of the tiles at the eaves, gable vents, and the gaps where roof planes meet.
How fast can a roof rat problem grow in an Arizona attic?
Roof rats raise three to five litters a year, up to eight young apiece by UC IPM's count, and Arizona's mild winters never pause that. A pair of rats in a Gilbert attic in October can become a much bigger group by spring if the eaves stay open.
What does rodent control cost in Arizona?
It is quoted after inspection, and the main drivers are tile roof sealing, attic insulation replacement, and how much citrus and palm trimming is needed before exclusion holds. With a median home value around $416,500 across Arizona's cities, attic damage is costly to ignore, and on a roof rat job the roofline is where the hours go.
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The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Rodent Exterminator · Updated October 11, 2026 · How we write these guides