Pest Control for a New Home in Missouri: What to Do First

Moving into a new home — whether newly built or newly purchased — is an ideal time to establish pest protection from the ground up rather than reacting to problems after they develop. The steps you take in the first weeks and months set the baseline for how the home performs against pest pressure in the years ahead. Here is a practical guide to pest control priorities for a new Missouri home.

New Construction: What to Know

Brand-new homes in Missouri typically have builder-applied termite pre-treatment as part of construction — soil treatment or physical barriers applied before the slab is poured or the foundation backfilled. Confirm with your builder what termite protection was installed, what warranty covers it, and when the warranty expires. Understand whether the warranty is a retreatment warranty or a damage repair warranty — these are different in scope and value.

New construction also tends to have better envelope integrity than older homes — fewer gaps and penetrations that have developed over years of settling. However, the construction process itself leaves gaps around plumbing rough-ins, HVAC penetrations, and utility entries that are not always fully sealed before occupancy. Do a systematic inspection of these penetrations and seal any that are open.

Existing Home Purchase: Inspection Priorities

When moving into an existing home, the pest control priority list is different:

• Termite inspection: If a wood-destroying organism (WDO) inspection was not part of the purchase process — or if it was done more than a year ago — schedule a professional termite inspection before settling in. Evidence of prior termite activity requires assessment of whether treatment history is current and whether existing damage needs attention.
• Rodent inspection: Check the basement, crawlspace, garage, and attic for signs of mouse activity — droppings, gnaw marks, nesting material. Prior owners may not have disclosed a rodent problem, and finding it early is far better than finding it after you have moved all your belongings in.
• Cockroach inspection: Inspect kitchen appliances, cabinet hinges, and under-sink areas for signs of German cockroach activity. A prior infestation that was inadequately treated can leave surviving eggs that hatch after occupancy change.
• Brown recluse assessment: In a Missouri home with a crawlspace or basement, brown recluse inspection is reasonable — particularly if the home has been unoccupied for a period or if the prior occupants were not on professional pest service.

Establishing a Baseline Service Program

Starting a professional pest control program at move-in creates a clean baseline. The first treatment of a previously unserviced home often produces more pest activity than subsequent treatments — pests that have established in wall voids and exterior harborage are flushed out by the initial treatment. Seeing more insects in the weeks after the first service is normal and expected, not a sign that treatment is not working.

Quarterly general pest service started at move-in establishes consistent perimeter protection that prevents the interior infestations that reactive homeowners deal with periodically. The cost difference between proactive quarterly service and periodic reactive treatment (after an ant infestation, after a spider buildup, after finding mice) is usually minimal — and the experience is dramatically better.

Documentation to Keep

• Any termite treatment records from prior owners or the builder — including the product used, the date, and the warranty status
• The WDO inspection report from the home purchase
• Your pest control service records going forward — this documentation has value when you eventually sell the home