If you’re trying to figure out how to get rid of rodents in Tempe, something has already made the problem hard to ignore. Perhaps you heard scratching in the attic at 2 AM. Or you found dark, pellet-shaped droppings behind the stove. Even worse, you may have opened the hood of your car and discovered a pack rat had chewed through your engine wiring overnight. Whatever tipped you off, the reality is the same: rodents are in or around your home, they’re multiplying, and they won’t leave on their own.

Tempe’s unique mix of older neighborhoods near ASU, citrus-heavy South Tempe streets, and desert-edge properties along the Papago Park and South Mountain fringes creates ideal rodent habitat across the entire city. Roof rats run the palm trees and citrus groves. Pack rats build massive nests in desert landscaping and under vehicle hoods. House mice slip into garages, pantries, and wall voids through gaps the size of a dime. This guide covers how to identify which rodent you’re dealing with, why Tempe homes are such targets, what actually works to get rid of them, and when you need professional help.

The Rodents You’ll Find in Tempe Homes

Knowing how to get rid of rodents in Tempe starts with identifying which species has moved in. The control approach is different for each one, and using the wrong method wastes time while the population grows.

Roof Rats

Roof rats are the most common and most damaging rodent in Tempe. They’re sleek, dark brown to black, with large ears and a tail longer than their body — adults measure roughly seven to eight inches not including the tail. As their name suggests, roof rats prefer elevated spaces. Specifically, they travel along power lines, palm tree trunks, block wall tops, and fence lines to reach rooftops, where they enter through gaps in roof tiles, attic vents, gaps around AC line penetrations, and any opening larger than a quarter.

Once inside, roof rats nest in attic insulation, chew through electrical wiring (a leading cause of unexplained house fires), contaminate stored items with urine and droppings, and gnaw on wood and PVC plumbing. Because they’re nocturnal, the first sign is usually scratching or scurrying sounds in the ceiling or walls at night.

Roof rats are particularly heavy in South Tempe neighborhoods with mature citrus trees, palm trees, and dense landscaping. Citrus fruit — especially oranges and grapefruit left on the tree or fallen on the ground — is a primary food source. If you have citrus trees and you’re not picking the fruit, you’re feeding roof rats.

Pack Rats (Wood Rats)

Pack rats are the desert-adapted rodent that causes the most expensive damage in Tempe. They’re larger than house mice but smaller than roof rats, with big ears, large dark eyes, and a furry (not scaly) tail. Notably, pack rats are named for their hoarding behavior — they build large nests called middens from sticks, cactus pads, rocks, and whatever else they can drag in, including wiring, hoses, and pool equipment parts.

However, the signature pack rat problem in Tempe is vehicle damage. Pack rats nest in engine compartments, chewing through wiring harnesses, coolant hoses, and air filter housings. In fact, a single pack rat can cause thousands of dollars in automotive damage in one night. They also nest under AC units, inside landscape features, around pool equipment, and inside electrical junction boxes.

Pack rat activity is heaviest on Tempe properties that border desert or open land — along the Papago Park corridor, near South Mountain, and in neighborhoods adjacent to undeveloped lots. But they’re found throughout the city wherever landscaping provides cover.

House Mice

House mice are the smallest rodent you’ll encounter — just two to four inches long with gray-brown fur and large ears relative to their body. Furthermore, they’re also the most prolific breeders. A female mouse can produce six to eight litters per year with five to six pups per litter. This means a single breeding pair can become dozens of mice within months.

Mice enter through incredibly small openings — a gap the size of a dime is enough. For example, common entry points include gaps under garage doors, spaces around utility and plumbing penetrations, worn weatherstripping, and openings around dryer vents. Once inside, they nest near food sources in kitchen walls, pantries, garages, and storage areas.

In addition, mice contaminate food with droppings and urine, gnaw on packaging and wiring, and leave a musty odor in heavily infested areas. In Tempe’s older neighborhoods near ASU — where homes have more settling cracks, aging infrastructure, and shared walls in apartment and duplex housing — mice are especially common.

Why Tempe Is a Hotspot for Rodents

Tempe’s combination of climate, vegetation, and housing stock creates one of the most rodent-friendly environments in the Valley. Understanding what makes your property attractive is essential to knowing how to get rid of rodents in Tempe and keep them out.

Citrus trees are rodent magnets. Tempe’s established neighborhoods are full of mature orange, grapefruit, lemon, and tangerine trees. Fallen fruit and fruit left on the tree are the primary food source for roof rats in the city. If your neighbors have citrus trees even if you don’t, roof rats are still traveling through your yard.

Palm trees are highways. Roof rats use palm tree trunks to travel from ground level to rooftops. A palm tree near the roofline is essentially an expressway into your attic. Tempe’s abundance of mature fan palms and date palms — especially in older neighborhoods — gives roof rats easy roof access across entire blocks.

Dense landscaping provides cover. Oleander hedges, bougainvillea, ivy, and other dense vegetation along block walls and fence lines give rodents daytime cover and protected travel corridors. Consequently, they can move across your property without ever being exposed.

Housing and Water: Why the Problem Spreads Fast

Older housing has more entry points. Many Tempe homes near ASU and in central Tempe were built in the 1960s through 1980s. As a result, decades of settling, aging rooflines, and wear on weatherstripping and seals create more entry points than newer construction.

Water is everywhere. Irrigation, pools, pet bowls, birdbaths, leaky hose bibs, and AC condensation lines give rodents the water they need. In the desert, your irrigated property is an oasis — and rodents know it.

ASU-area density. The high density of student housing, apartments, and duplexes near the ASU campus creates conditions where rodent problems spread easily between adjoining units through shared walls, attic spaces, and utility chases.

Signs of a Rodent Infestation in Your Tempe Home

Rodents are nocturnal and secretive. You may have a significant infestation before you ever see a live rodent. Watch for these signs.

Droppings. Roof rat droppings are dark, capsule-shaped, and about half an inch long. Mouse droppings are much smaller — like dark grains of rice. Fresh droppings are dark and moist; old ones are gray and dry. Check behind the stove, under the sink, in the pantry, in the garage, and in the attic.

Scratching and scurrying sounds. Noises in the attic, ceiling, or walls at night are the classic first indicator. Roof rats are particularly loud movers.

Gnaw marks. Fresh gnaw marks are lighter in color. Check food packaging, wood trim, wiring, and PVC pipes. Roof rats gnaw to maintain their teeth, so they chew on things they don’t even eat.

Grease marks (rub marks). Rodents travel the same paths repeatedly, and their oily fur leaves dark smudge marks along walls, pipes, and entry points.

Nests. Mice build nests from shredded paper, fabric, and insulation. Pack rats build large stick-and-debris nests (middens) outdoors. Roof rats nest in insulation and hidden attic spaces.

Fruit damage. Hollowed-out citrus fruit on the tree or on the ground with characteristic gnaw marks is a clear sign of roof rats.

Pet behavior. Dogs and cats often detect rodents before you do. If your pet is fixated on a particular wall, cabinet, or ceiling area, pay attention.

How to Get Rid of Rodents in Tempe: Step-by-Step

Effective rodent control follows a specific sequence: identify, remove the food source, trap, exclude, and monitor. Skipping steps — especially exclusion — guarantees the problem returns.

Step 1: Eliminate Food and Water Sources

This is the foundation of every successful rodent control effort. First, pick citrus fruit as it ripens and collect fallen fruit daily. Additionally, store pet food in sealed metal or thick plastic containers and don’t leave bowls outside overnight. Keep outdoor garbage in cans with tight-fitting lids. Also, clean up birdseed spillage from feeders. Fix leaky hose bibs and irrigation lines. Finally, empty pet water bowls at night.

For pack rats specifically, remove any food-grade attractants from the garage and driveway area. Pack rats are drawn to garden hoses (they chew them for water), stored birdseed, and pet food bags.

Step 2: Set Traps

Trapping is the most effective method for actively removing rodents from your home. Specifically, snap traps are the standard — they’re fast, humane, and allow you to confirm what species you’re catching and how many.

Place traps along walls, in attic spaces, behind appliances, and in the garage. Because rodents travel along edges, traps should be perpendicular to the wall with the trigger end closest to the baseboard. Use peanut butter, dried fruit, or bacon as bait for rats. On the other hand, chocolate or peanut butter works well for mice.

Important: avoid rodent poison (rodenticides) as a first-line approach. Poisoned rodents often die inside walls, attics, or crawl spaces, creating a terrible odor that can last weeks. Poison also poses secondary poisoning risks to pets, owls, hawks, and other wildlife that eat rodents. Trapping gives you control over where and how rodents are removed.

Step 3: Seal Entry Points (Exclusion)

This is the step that separates temporary relief from lasting results. In other words, you can trap every rodent in your house, but if you don’t seal how they got in, new ones move in within days.

A thorough exclusion inspection covers the roofline (gaps in tiles, open barrel tile ends, damaged fascia), attic vents and turbine vents, gaps around AC line penetrations and conduit, plumbing and utility entries through exterior walls, garage door seals and weatherstripping, gaps where stucco meets the foundation, and weep holes in block walls.

Most importantly, seal openings with materials rodents can’t chew through — galvanized steel mesh, hardware cloth, metal flashing, and steel wool combined with caulk. Avoid using expanding foam alone, because rodents chew through it easily.

For roof rats entering through the roofline, professional exclusion is usually necessary because the work requires roof access, and Arizona roofs in warm months can exceed 160°F.

Step 4: Address the Landscape

Trim palm tree fronds and skirts up to eliminate climbing access (a minimum of four feet of clear trunk below the frond line). Cut back tree branches that overhang the roof or come within four feet of the roofline. Thin dense hedges and ground cover along the foundation and block walls. Remove ground-level debris piles, woodpiles, and stored materials that provide harborage.

For pack rats, remove or relocate the midden nest. Pack rat nests should be physically removed and the area treated to discourage rebuilding.

Step 5: Monitor Ongoing

Even after successful trapping and exclusion, ongoing monitoring catches new activity early. For instance, check traps weekly for the first month after treatment. Similarly, inspect the attic seasonally for new droppings or gnaw marks. Walk the exterior twice a year to check that exclusion materials are intact. Above all, continue picking citrus and managing food sources year-round.

Why DIY Rodent Control in Tempe Often Fails

Most homeowners who try to get rid of rodents in Tempe on their own run into the same problems. First, they set a few traps in obvious spots but miss the primary travel paths. In addition, many skip exclusion entirely, so new rodents replace the ones they catch. Others turn to poison and end up with dead rodents decomposing in walls. Even those who attempt exclusion often seal some entry points but miss others — and a single unsealed gap is all it takes. As a result, they underestimate how quickly rodents reproduce, turning a small problem into a large infestation within weeks.

Professional rodent control addresses all of these issues through comprehensive inspection that identifies species, entry points, and population indicators. Moreover, it includes strategic trap placement along confirmed travel paths, thorough exclusion using rodent-proof materials at every identified entry point, and follow-up monitoring to verify elimination and catch new activity early.

How to Get Rid of Rodents in Tempe: Protecting Your Vehicle

Because pack rat vehicle damage is such a common and expensive problem in Tempe, it deserves specific attention.

If you park outdoors, open the hood periodically and check for nesting material, chewed wires, or droppings. In addition, motion-activated lights or ultrasonic deterrents placed near the parking area may help (these are more effective for pack rats than for roof rats). Also, remove any food sources near the parking area. Some Tempe homeowners have success placing snap traps near the vehicle’s wheels (baited with peanut butter) to intercept pack rats before they climb into the engine bay.

For ongoing protection, however, professional trapping and exclusion around the property reduces the overall pack rat population so fewer individuals are targeting vehicles.

How Alpha Pest Control Gets Rid of Rodents in Tempe

Alpha Pest Control has been headquartered in Tempe since 1987 — we know this city’s rodent challenges better than anyone because we’ve been solving them in these exact neighborhoods for nearly four decades. Our rodent control service includes comprehensive inspection to identify species, entry points, and infestation scope, professional trapping with regular monitoring and trap servicing, exclusion work to seal every identified entry point with rodent-proof materials, and follow-up visits to verify elimination and ensure exclusion holds.

Rodent control works best as part of an integrated property management approach. Reducing the broader pest population — including crickets, ants, and mosquitoes — and maintaining weed-free landscaping removes the food sources and harborage that attract rodents in the first place. We serve Tempe, Phoenix, Chandler, Mesa, Scottsdale, Gilbert, Ahwatukee, and Sun Lakes.

For more on rodent-borne disease prevention, the CDC’s rodent control page provides research-backed guidance. Maricopa County Environmental Services also offers local resources on rodent management in the Valley. The National Pest Management Association provides additional homeowner guidance on choosing a qualified provider.

If you’re hearing noises in the attic, finding droppings, or dealing with pack rat damage, request a free inspection or get a quote. We’ll identify what’s gotten in, how they’re getting in, and build a plan to get them out and keep them out.

Frequently Asked Questions About How to Get Rid of Rodents in Tempe

What types of rodents are most common in Tempe? Roof rats, pack rats (wood rats), and house mice are the three most common rodents in Tempe homes. Roof rats are the most widespread, especially in neighborhoods with citrus and palm trees. Pack rats are common on desert-edge properties and cause significant vehicle damage. House mice are prevalent in older neighborhoods and multi-unit housing near ASU.

How do rodents get into my house? Roof rats enter through gaps in roof tiles, attic vents, and openings around utility lines — they climb trees, power lines, and block walls to reach the roofline. Mice squeeze through gaps as small as a dime around doors, utility penetrations, and foundation cracks. Pack rats typically stay outdoors but nest in engine compartments, AC units, and landscape features.

Are rodents dangerous? Yes. Rodents contaminate food and surfaces with droppings and urine that can transmit diseases including hantavirus, salmonella, and leptospirosis. They chew electrical wiring, which is a documented fire hazard — rodent damage to wiring contributes to a significant percentage of unexplained house fires nationally. Pack rats cause expensive vehicle damage by chewing wiring harnesses and hoses.

Should I use poison to get rid of rodents? We generally recommend trapping over poison as the primary removal method. Poisoned rodents often die in inaccessible locations (inside walls, in attic spaces) and create a severe odor that lasts weeks. Poison also poses secondary risks to pets, children, and wildlife such as owls and hawks that eat poisoned rodents.

How do I stop roof rats from getting into my attic? Exclusion is the key — seal every opening larger than a quarter on your roofline using galvanized steel mesh, hardware cloth, or metal flashing. Trim palm trees and cut back branches that overhang the roof. Pick citrus fruit as it ripens and collect fallen fruit daily. Professional exclusion is usually necessary because roof-level work requires specialized access and materials.

How fast do rodents reproduce? Extremely fast. A female house mouse can produce six to eight litters per year with five to six pups each — a single pair can become dozens within months. Roof rats produce four to six litters per year with six to eight pups each. This rapid reproduction is why early intervention matters — a small problem becomes a large infestation quickly.

When are rodents most active in Tempe? Rodents are active year-round in Tempe, but infestations peak in fall and winter when cooling temperatures drive them to seek shelter inside homes. Roof rat activity increases when citrus fruit ripens (typically October through March). Pack rats are active year-round with no strong seasonal pattern.