Why identification is the first line item
In most of the country, a termite finding leads straight to a treatment decision. Southern Arizona adds a step, and skipping it is how people overspend. University of Arizona extension documents at least ten subterranean termite species in the desert Southwest and separates them by risk. Gnathamitermes tubiformans, the desert termite, is not a structural pest at all. Heterotermes aureus, the desert subterranean termite, is described as an important structural pest. Reticulitermes tibialis is widespread across the region. Western drywood termites add another category entirely, and Arizona also appears on Florida agriculture's list of states where Formosan termites have been recorded. That range means a proposal in Tucson should name the insect, not the family. Ask what was found, where, and what evidence supports the call. If the answer is that soil sheeting was seen on dead wood in the landscape, the correct response may be housekeeping rather than a perimeter treatment. If tubes cross the slab edge, the response is different, and the difference is worth thousands.
Inside a barrier treatment on a Tucson slab
A soil barrier job starts with a walk of the perimeter, marking where soil is open and where concrete blocks access. Along open ground, the crew cuts a narrow trench tight to the foundation, applies termiticide at the labeled rate per linear foot, and returns the treated soil rather than replacing it with fresh material. At every attached pour, the rotary hammer comes out. Driveway edges, walkways, garage floors, patio slabs, and carport pads each receive a line of holes so product reaches the soil underneath, then get plugged and patched. Courtyard walls and block garden walls tied into the house deserve their own attention, since they carry activity from yard soil directly into the structure, and they are the element most often left off a bid. Interior work is targeted at bath traps, water heater platforms, and documented activity points. Before the truck leaves, walk the house with the lead technician, have them show you the treated line and every drill location, and get it recorded on your diagram.
Drywood work: injection versus tenting
When western drywood termites are confirmed, the choice is between treating a defined piece of wood and treating the entire structure. Injection makes sense when an inspector can establish boundaries. A single ramada beam, a window frame, or a length of fascia with pellets beneath it can be drilled along the galleries and injected, or simply cut out and replaced. The disruption is small and the cost is modest. Tenting or heat becomes the answer when activity is found in several places, when the attic framing is involved, or when the extent cannot be determined. Fumigant reaches wood throughout a sealed structure, and heat raises the interior past the survival threshold with sensors confirming the wood itself gets there. Ask the inspector directly what would have to be true for the localized option to work. A clear answer describes what they saw and where. A vague answer is a reason to get a second inspection before committing to the more expensive path, especially in Tucson summers when leaving the house for two days is its own project.
What a bait program actually costs over five years
Comparing an installation price to a barrier price is the mistake most homeowners make. Baiting works through termite social feeding. Workers find a station, feed, and transfer material to nestmates, so the colony declines gradually rather than hitting a chemical wall. University of Florida materials place that protection at four to seven years or longer, indefinitely as long as the system is maintained. Maintained is the operative word, and it has a price. Ask what the annual service costs today, whether that number can rise, how many visits it covers, and what report you receive after each one. Then multiply across five years and set the total beside the one time barrier quote. Neither structure is a trick. A barrier concentrates the cost up front and asks for an annual inspection. A bait program spreads it out and asks for continuing service. In a spread out metro like Tucson, also ask how service routes work, because a program only protects a house that technicians actually reach on schedule.
Keeping the treated band intact in a desert yard
Desert landscaping projects are the most reliable way to undo a barrier treatment without meaning to. The treated soil is a physical band around the foundation. Digging a new planting bed against the house, trenching for landscape lighting, replacing a walkway, installing drainage, or lowering grade along a side yard can each remove or breach a section of it. Pouring a new patio covers treated soil with concrete, which usually calls for a drilled application to restore continuity. The rule is to call the treating company before the shovels arrive rather than after. They can tell you which stretch is affected and what retreating it involves, and doing that while a trench is already open costs far less than reopening later. New wood deserves the same caution. A ramada post or gate frame set into soil beside a treated foundation hands termites a bridge over everything you paid for. Concrete footings solve it, and in a yard where reliable moisture is scarce, keeping wood off the ground matters more than it looks.
Reading the retreatment agreement before you need it
The document most homeowners file unread is the one that determines what happens the next time tubes appear. Find out what triggers a return visit. Some agreements act on any evidence, others require confirmed live activity, and that distinction surfaces at exactly the wrong moment. Find out what the visit covers. Retreating an area is standard. Repairing damaged wood is frequently excluded, and it should not come as a surprise later. Find out what keeps the terms alive. An annual inspection is the usual requirement, and disturbing treated soil through landscape work can void coverage on that section. Find out what renewal costs and whether the price is fixed. Then schedule the inspection each year even when nothing looks wrong. Across Tucson, a lapsed inspection is the most common reason a homeowner learns their coverage expired, and it is the cheapest failure on this entire page to prevent.