Do you need a termite pre-treatment in the White Mountains?

Written by the Hydra Pest Control team, Arizona-licensed (license #9790)

Last reviewed: October 9, 2026

Direct Answer

Yes, plan on one. Cold winters don't keep subterranean termites out of the White Mountains. University of Arizona Cooperative Extension says the arid-land subterranean termite is found throughout Arizona and is the most common termite pest in the Flagstaff area, and U.S. Forest Service researchers have collected Reticulitermes termites on the Mogollon Rim at 6,000 to 7,000 feet. Up here termites are easy to miss, which is why the pre-treatment before the slab pour matters.

Subterranean termites live in the high country

UA Cooperative Extension says subterranean termites are considered major urban pests throughout Arizona. The arid-land subterranean termite (Reticulitermes tibialis) is the most widely distributed subterranean termite in the state, reported as far north as Page, and the most common termite pest in the Flagstaff area.

U.S. Forest Service researchers report that Reticulitermes occurs naturally throughout Arizona except much of the Sonoran and Colorado Deserts. They collected samples at 6,000 to 7,000 feet on the Mogollon Rim and analyzed samples from Prescott to Springerville.

Why you may not see them

Above 4,000 feet, these termites usually swarm in June and July, and UA Extension notes their swarms aren't as commonly noticed as those of other subterranean termites. They tend to go after moist and decaying wood.

We often treat for subterranean termites in the White Mountains, and we commonly find them in crawlspaces and inside wall voids, places homeowners rarely look.

Other wood-destroying pests up here

Carpenter ants: UA Extension calls them structural pests. They prefer moist, softened wood and often set up inside buildings where water leaks, such as roof leaks, poorly flashed chimneys and poorly sealed windows.

Dampwood termites: they occur in Arizona, but UA Extension says they don't cause widespread problems here and can be a problem under certain conditions. They need moist wood, so fix leaks and keep wood off the soil.

If you're told you don't need it

We sometimes hear that a pre-treatment isn't needed up here because of the cold. Before you agree, check what your lender requires (FHA requires a builder's termite guarantee on new construction in every Arizona county, including Navajo and Apache; see does your lender require a termite pre-treatment?). And remember the soil under the slab can only be treated before it's poured.

You have a choice of pre-treatment company. Ask about products, methods, records and final grade follow-up. See what to ask a pre-treatment company and the final grade guide.

Where we work

We do termite pre-treatments and termite control in Show Low, Pinetop-Lakeside, Snowflake, Heber-Overgaard and Eagar. See also termite control in the White Mountains and the first 10 steps of building a home in Arizona.

Frequently asked

Are there termites in Show Low and the White Mountains?

Yes. UA Extension reports the arid-land subterranean termite throughout Arizona, and U.S. Forest Service researchers collected Reticulitermes on the Mogollon Rim at 6,000 to 7,000 feet. We often treat for subterranean termites in the White Mountains.

When do termites swarm in the White Mountains?

Above 4,000 feet, arid-land subterranean termites usually swarm in June and July, according to UA Extension. Their swarms are easy to miss.

Doesn't the cold keep termites away?

No. Subterranean termites live in contact with the soil and are found throughout Arizona, including the high country. They're just harder to spot up here, often in crawlspaces and wall voids.

Do I need a pre-treatment on a new cabin or second home?

If you're building new, the pre-treatment before the slab pour is the only chance to treat the soil under it, and an FHA loan requires the builder's termite guarantee. On a cash build no lender requires it, but we strongly recommend it.

Sources

Building in the White Mountains? Get a free custom quote for your termite pre-treatment.

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