Termite Tubes in Arizona - Where to Look on an East Valley Home

Termites need contact with soil moisture to survive, so they build these tubes to travel from the ground to the wood while staying out of open air. A tube on your foundation is one of the clearest signs of activity, even if you have never seen a termite.

What a termite tube looks like

Picture a dirt line about as wide as a pencil, running up a wall instead of across it. It can be a single straight tube or a few branching lines. Up close it looks like packed mud, often the same color as the soil next to it.

Walk-around: where to look

Go slowly, and bring a flashlight for shaded corners.

The stem wall and foundation line

Start at the base of the house. Look along the stem wall and block foundation all the way around, especially where soil, mulch or landscaping sits close to the wall.

Where stucco runs below grade

If the stucco or siding runs below the soil line, the foundation is hidden. That is where a tube would normally be visible, so note those stretches. They are worth pointing out to whoever inspects the home.

Inside the garage

Check the garage walls where they meet the slab, and the corners behind stored boxes, shelving and bins. Stored items against the wall hide tubes for a long time.

Piers and under the porch

Look at piers, porch supports and the underside of any raised porch or step.

Wood touching soil

Check wood fence posts, arbors, landscape edging and any wood sitting directly in soil. Tap it. Wood that sounds hollow or feels soft is worth noting.

Along baseboards and trim

Inside, look for small mounds of mud packed into cracks in wood or along baseboards, and for sagging or bubbling paint on wood near the foundation.

Other signs to note on the same walk

• Discarded wings near windows, doors or outdoor lights, often after a rain
• Firewood, lumber or pallets stacked against the house or garage
• Wood mulch piled against the stucco line
• Old stumps or buried wood scraps left from construction

None of these mean termites are present. They are conditions termites are drawn to.

If you find a tube

• Leave it in place. Do not knock it down and forget about it.
• Take a photo with something for scale, like a coin or a key.
• Skip the store-bought spray. A spray aimed at the tube you can see almost never reaches the colony feeding on your home from the soil below.
• Do not wait for damage indoors. Termite damage is usually gradual and hidden behind drywall or under flooring.

Then text the photo to our team.

What Peterson does next

Termite work at Peterson starts with an inspection of the property, inside and out. You get a straight explanation of what was found and where. If there is an active issue, treatment is arranged and managed on your behalf, so you have one point of contact. Once it is addressed, termite signs are folded into your regular pest service.

A lot of tubes get found during routine scorpion or ant visits, when a technician spots one while walking the property.

Termite help across the East Valley

Peterson Pest Management is family-owned and based in Gilbert, serving Mesa, Chandler, Queen Creek and Phoenix. Read more on the termite control page, or see what a termite inspection in Gilbert covers.