Each quarterly visit targets a different seasonal threat. Spring catches the first emergence. Summer manages peak activity. Fall is the critical rodent-exclusion window. Winter handles indoor pests and termite inspections. The order matters as much as the cadence.
Schedule each visit in the early part of its quarter, not the middle. Treating in March beats treating in May for spring; treating in September beats treating in November for fall.
| Quarter | Best month | Primary focus |
|---|---|---|
| Spring | March or April | Perimeter spray, ant emergence, spider colonies |
| Summer | June or July | Wasps, mosquitoes, ticks, ant follow-up |
| Fall | September or early October | Rodent exclusion, sealing entry points |
| Winter | December or January | Indoor treatment, termite inspection |
Spring is when most overwintering pests come out at once. Ants emerge from underground colonies, spiders rebuild after winter dormancy, and the first cockroach generation of the year hatches. Treating early — before consistent 60°F days — interrupts that first wave. Wait until late May and you're cleaning up after it.
A solid spring visit covers:
Summer is the highest-pressure pest season. Populations have multiplied, mosquitoes and ticks are at peak activity, wasps are aggressive, and ants forage indoors. The spring residual is breaking down, which is exactly when the summer visit is timed.
The summer visit usually focuses more on outdoor activity than indoor — the goal is to keep pests off the perimeter and outside the structure rather than treating indoor spaces. If indoor activity has spiked since spring, treat that as a sign of a missed sealing opportunity, not a treatment failure.
Fall is the most critical visit of the year for most homes. As overnight temperatures drop below 50°F, mice and rats start scouting for indoor shelter. A house that wasn't sealed in September is a house with mice in November. Rodents need only a quarter-inch gap to squeeze through, and they remember entry points year over year.
The National Pest Management Association estimates that rodents invade roughly 21 million US homes each fall and winter. The exclusion work that prevents this only works if it happens before the temperature drop, not after.
Outdoor pest activity drops sharply in winter, but indoor pressure increases. Rodents already inside breed in heated walls and attics. German cockroaches in kitchens never stop. Overwintering insects in stored boxes can become active when furnace heat reaches them. The winter visit is the indoor visit.
Winter is also the right time for the annual termite inspection. With foliage stripped back, exterior signs of termite activity — mud tubes on foundations, damaged wood, swarmer wings — are easier to spot. Termite damage costs US homeowners roughly $5 billion a year and is not covered by homeowners insurance.
The schedule only works if all four visits happen. The fall rodent visit is the one that gets skipped most — by the time you remember it, mice are already inside. A recurring reminder set for early September solves that, and the same goes for spring, summer, and winter.
Read more about how often pest control should be done if you want to confirm quarterly is the right cadence for your situation, or check signs you need pest control if you've spotted activity. The pillar at pest control reminders ties the system together.
Set the next visit now — the schedule is easier to keep when each one is already on the calendar.
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Early spring (March or April in most US regions) and early fall (September) are the two most consequential visits. Spring catches insects as they emerge from overwintering and prevents the season's first generation. Fall seals rodents out before they look for winter shelter.
Schedule it for the first stretch of consistently warm days, typically March in the South and April or May in cooler regions. Treating before spring emergence cuts the early generation of ants, spiders, and cockroaches. Wait until late spring and you're treating the second wave instead of the first.
Mice and rats start looking for indoor shelter when overnight temperatures drop below 50°F. A fall visit before that point — September or early October in most of the US — seals entry points and sets exterior bait while the colony is still outside. Wait until winter and you're trapping mice already inside the walls.
Outdoor activity drops, but indoor pests don't. Rodents already inside, German cockroaches in kitchens, and overwintering bugs in attics keep going. Winter is also the right time for an annual termite inspection — fewer leaves and weeds make exterior signs easier to spot.
Exterior perimeter spray for the foundation, treatment of door frames, windows, and entry points, removal of accessible spider webs and wasp nests, and an interior treatment in problem areas like the kitchen and garage. The technician should also inspect for new entry points and signs of activity.
Before. Quarterly pest control is a prevention tool, not a remediation tool. The cost of preventive treatment is roughly a fifth of the cost of remediating an established infestation. The point of the schedule is to stay ahead of pest seasons, not catch up to them.
Free, no account. You'll get an email two weeks before each quarterly visit — and follow-ups if you don't book it.
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