How long does a termite treatment last?

It's the label standard, not a promise about your yard. Kentucky's extension puts it this way: all liquid termiticides are supposed to control termites for at least five years when applied according to label directions, and actual longevity depends on product type, application quality, region and local termite density. On a house where the trench was continuous, the slab was drilled on the right spacing and nothing has moved the soil since, treatments routinely outlast that. On a house where a new patio, a garden bed or a French drain cut through the treated soil a year later, the barrier has a gap the termites can find. Kentucky notes even a good application can be crossed through untreated gaps in the soil, which is why follow-up inspections matter.

Digging, water and construction. Anything that removes or replaces the treated soil along the foundation opens a path: a new deck footing, a regraded flower bed, a replaced walkway, a plumber's trench for a sewer line. Heavy, constant moisture from a broken downspout or a grading problem can also move product and keeps the soil attractive. The EPA's prevention advice is the same list in reverse: keep the soil around the foundation dry with proper grading and working gutters and downspouts, fix leaks immediately, and keep firewood and wood debris away from the house. Tell your termite company before you do work along the foundation and they can retreat the disturbed section.

Inspection. UC IPM recommends regular inspections every 3 to 5 years for any house and more often for one that has had termites, and a treated house should get a yearly look during and after its guarantee. The inspector checks for new mud tubes on the foundation and posts, probes the sill plate and the wood near grade, and checks the bait stations if there are any. No new tubes, no swarms and no soft wood means the treatment is holding. Kentucky's extension notes reputable companies offer warranties that return and retreat the affected area at no additional charge as long as the annual renewal is maintained, so keep the renewal current.

Bobby Bugs termite treatments carry a written guarantee, 1 year for a partial treatment and 2 years for a full one, with inspection during that period and an annual inspection offered after. The most common reason we retreat a section on Long Island isn't product failure; it's a homeowner in Massapequa or Levittown who put in pavers or a new front stoop and cut the treated zone. Call before the work starts and the fix is a short retreat of that stretch, not a new job.