Arizona Pest Calendar: What Shows Up Each Month

Arizona pests by month

This is a planning calendar for low-desert homes in the East Valley and Pinal County. It combines typical seasonal tendencies with practical maintenance reminders. Elevation, weather and the conditions at your house change the timing. A pest missing from a month's row can still be present.

Low-desert Arizona pest calendar
Month	What may be active	What to watch for	One thing to do
January	Rodents seeking indoor shelter; sheltered household pests	New droppings, gnawing or disturbed stored food	Inspect garage storage and photograph signs without disturbing them.
February	Rodents; insects in protected indoor spaces	Gaps at doors and utility openings before spring warms up	Put worn exterior door seals on the repair list.
March	Bees and wasps; weather-dependent ants	Bee swarms and early nest building near occupied areas	Observe from a distance and arrange identification when activity affects access.
April	Bees, wasps, scorpions as nights warm, and mosquitoes	Water held in containers and nighttime activity beside walls	Empty and scrub unused containers that collect water.
May	Scorpions, outdoor roaches and bee swarms	Insects gathering at porch lights and open garage doors	Check the garage-bottom seal with the door closed.
June	Warm-weather scorpions and roaches; mosquitoes where water persists	Leaking irrigation and damp corners as temperatures rise	Repair one source of unwanted standing water.
July	After rain: mosquitoes, ants, crickets and possible termite swarms	Winged insects, water-filled items and pests displaced by storms	Photograph a swarm or shed wings for identification.
August	Rain-dependent insects, summer roaches and warm-night scorpions	Fresh activity after storms, especially near entry doors	Check and empty water-holding items after rain.
September	Mosquitoes and other monsoon insects when rain continues	Debris against walls and worn screens after summer use	Clear accumulated loose debris away from one exterior wall.
October	Crickets and rodents moving indoors as weather cools; mosquitoes may persist	Activity near garage storage, pet food and exterior gaps	Store accessible food and feed in sturdy, closed containers.
November	Rodents seeking shelter; scorpions generally less active	New sounds, gnaw marks or damage around entry points	Arrange an inspection before sealing a suspected active rodent opening.
December	Indoor rodents and pests in protected spaces	Changes in storage areas and decorations brought inside	Inspect stored items before moving them into living rooms.

Termites and indoor cockroaches do not need to wait for their month on a calendar. A new sign deserves attention when you find it. Termite flights depend on species and weather; a summer rain can trigger some subterranean termite swarms, but not every winged insect is a termite.

Spring pest checks

Use mild weather to inspect doors, screens and accessible wall gaps. Honey-bee swarms are common in spring, and wasp colonies begin building as conditions warm. Give an active swarm or nest space. Tell us whether it is beside a doorway, a walkway or somewhere people can avoid.

Keep your observations simple. A photograph from a safe distance and the time you first noticed activity help us discuss the next step. Book now to start a service request. The owners confirm visit times.

Seeing this at your place? We'll call you.

Summer and monsoon pests

Scorpions and outdoor roaches deserve attention during warm months. When monsoon rain arrives, add standing water, crickets, ant activity and winged insects to the list. Do not assume every shower produces the same pest response. Read the monsoon pest guide for a closer look at storm-related changes.

Check the house after a storm, once conditions are safe. Start with water-holding containers and damaged seals. Our scorpion season guide explains why sightings vary. Book now if you want to review activity at your address.

Fall pest checks

Cooling weather can send field crickets and rodents toward buildings. That makes fall a useful time to organize storage and check food access. Look for actual signs before deciding that a sound or a chewed object belongs to a particular pest. Avoid sweeping or vacuuming suspected rodent droppings.

Save your notes for the inspection and tell us about attached garages, sheds and animal feed. Book now to discuss the property and whether a separate rodent assessment is needed.

Winter pest checks

Low-desert scorpions tend to be less active in cooler months. Rodents and pests sheltered indoors can still be a concern. Use the quieter stretch to review repairs you postponed, rather than stopping all observation until spring. A short monthly walk around accessible parts of the house keeps the list manageable.

Already have a plan? Bring up changes in sightings and any repairs since the last visit. Book now if you want to start service or discuss what has changed. Eligible homes start at $75 first month, then from $45/mo. No contract. Specialty work is quoted separately.

Arizona Pest Calendar

Arizona pests by month

Spring pest checks

Summer and monsoon pests

Fall pest checks

Winter pest checks

Sources and further reading

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