Termite Prevention Checklist: Season by Season

Termite prevention isn't one big job. It's a dozen small ones spread across the year, each done when it makes the most sense. This checklist puts them in order by season, with a short list of yearly tasks, so nothing slides for five years until the swarmers show up.

By John Updated 5 min read
Sketch of a clipboard checklist with four season boxes next to a house corner, a flashlight and a downspout

The short version

Spring: watch windowsills for swarmers and shed wings, and walk the foundation for mud tubes. Summer: check sprinklers, gutters and the AC drip line. Fall: clear gutters, stack firewood away from the house and check crawlspace vents. Winter: inspect the basement or crawlspace. Every year: a professional inspection, renewal of any termite warranty and a look at your treatment records.

On this page
  1. How to use this checklist
  2. The year at a glance
  3. Spring: swarm season
  4. Summer: water
  5. Fall: get ready for winter
  6. Winter: indoors and underneath
  7. Once a year, every year
  8. Making the checklist stick
  9. Questions

How to use this checklist

Most termite damage builds slowly. Michigan State University says winged termites come from a colony that has likely been there 5 to 7 years, and NC State Extension recommends homeowner "mini-inspections" during routine maintenance alongside professional inspections. A checklist turns routine maintenance into those mini-inspections.

Adjust the timing to your region. Swarm months differ by species and climate; our swarm season guide shows the months for your termites. In warm southern states, summer jobs can stretch from spring into fall.

The year at a glance

Each season's most important jobs. Details follow below.

Seasonal termite prevention checklist
Season Check Why
Spring Windowsills, doors and light fixtures for swarmers and wings Swarms are the most common way infestations are found
Spring The foundation, all the way around, for mud tubes Tubes show where termites cross into the house
Summer Sprinklers, hoses and the AC condensate line Water at the foundation helps termites
Summer Mulch depth and the gap at the siding Thin mulch dries; a gap keeps tubes visible
Fall Gutters, downspouts and splash blocks Keeps water away from the foundation through winter
Fall Firewood placement Stacks against the house hide termite routes
Winter Basement walls, sill plates and the crawlspace Easier to see with plants dormant; warm spots stay active
Any time Professional inspection and warranty renewal Catches what you can't see and keeps coverage current

Keep a dated note of what you find. Comparing years is how slow changes become obvious.

Spring: swarm season

  1. Watch the windows

    Check windowsills, door thresholds and light fixtures every few days. Swarmers fly to light, and Kentucky's extension entomologist says swarmers indoors almost always mean an infestation.

  2. Save a sample

    Put a few swarmers or wings in a sealed bag or a jar of rubbing alcohol for identification. See flying ants vs termites.

  3. Walk the foundation

    Look for pencil-thick mud tubes on the foundation, piers, steps and the bottom of the siding. Pull back plants and mulch where you can't see the wall.

  4. Check the porch and deck joints

    Look where porches, decks and steps meet the house. See termites in fences and decks.

For your seasonal checks

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  • Bright LED flashlight, 1,000+ lumens

    The one tool that really matters. A tight, bright beam shows mud tube texture and wing piles in dark corners.

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  • LED headlamp

    Keeps both hands free for probing and photographing in a crawlspace or attic.

    View on Amazon

  • Awl or flat-head screwdriver

    Press it into suspect wood. Healthy wood fights back. Eaten wood gives way like a stale cracker.

    View on Amazon

  • Pin-type wood moisture meter

    Wood that reads above about 20% is wet enough to invite rot and termites. Great for sills and subfloors.

    View on Amazon

Summer: water

  1. Aim the sprinklers

    The University of Florida says irrigation heads should be at least 1 foot from the wall and not spray it.

  2. Follow the drip lines

    Check the AC condensate line, hose bibs and drip irrigation for leaks at the foundation.

  3. Reset the mulch

    Keep mulch thin near the house and pulled back from the siding. Our landscaping guide has the numbers.

  4. Look under the deck

    Clear leaves and stored wood from under decks and porches.

Fall: get ready for winter

  1. Clean gutters and downspouts

    University of Kentucky entomologist Michael Potter lists working gutters, downspouts and splash blocks among the basic moisture fixes.

  2. Move the firewood

    Purdue says to keep firewood at least 3 feet from the house and off the ground. See firewood and termites.

  3. Clear the crawlspace vents

    Potter says to keep vents clear of plants, leaves and debris so the crawlspace can dry.

  4. Remove wood from the yard

    Pull scrap lumber, old stakes and stumps near the house where practical.

Winter: indoors and underneath

  1. Inspect the basement or crawlspace

    Look at sill plates, rim joists and piers. Michigan State says basement tubes often show up first on rim joists and sill plates.

  2. Probe suspect wood

    Push a screwdriver or awl into soft or blistered spots. Check moisture with a meter; see crawlspace moisture and termites.

  3. Don't ignore a winter swarm

    Ohio State notes a building's heat can occasionally trigger a winter swarm. Winged termites indoors in January still mean a colony nearby.

Once a year, every year

Some jobs don't belong to a season. Get a professional inspection each year; North Carolina's agriculture department says thorough inspections should be done annually. If you have a termite warranty, keep it current: Potter notes coverage usually depends on paying the annual renewal. And keep your treatment records together, including any diagram of where the house was treated, so the next inspector knows what was done. See termite bonds and how often to get a termite inspection.

Making the checklist stick

Do

  • Put seasonal reminders on your calendar
  • Keep a dated log of what you check and find
  • Bag swarmers or wings for identification
  • Schedule the professional inspection at the same time each year

Don't

  • Wait for swarmers to start checking
  • Let the warranty lapse to save the renewal fee
  • Spray store-bought insecticide on mud tubes and call it done
  • Cover foundation walls so they can't be inspected

Questions people ask

How often should I check my house for termites?

Do quick checks each season as part of routine maintenance, with extra attention to windowsills during swarm season, and get a professional inspection once a year.

What should a termite prevention checklist include?

Swarm and mud tube checks in spring, water and mulch checks in summer, gutters and firewood in fall, a basement or crawlspace look in winter, plus a yearly professional inspection and warranty renewal.

When is the best time to check for termites?

Spring, when most termites swarm, is the most important time to watch, but mud tubes and damage can be found any time of year.

Can termites be active in winter?

They can be. Termites in soil under a heated house can stay active, and Ohio State notes building heat can occasionally trigger a winter swarm.

Termites in your state

Sources