Good pest control technicians take pride in their work — and they see the same preventable mistakes, missed communication, and counterproductive homeowner behaviors on nearly every job. Here are the things they'd tell you if the service call allowed more conversation time.
Homeowners scrub the house before a pest control visit like they're hosting company. But cleaning removes the evidence technicians need to diagnose the problem — droppings, grease trails, frass, webbing, and pest activity patterns. That "embarrassing" cockroach trail under the sink is diagnostic gold. Leave the evidence in place and let the technician see the real situation.
The location, time of day, and frequency of your pest sightings are critical data points. "I see ants in the kitchen" is less helpful than "I see small brown ants trailing from under the dishwasher to the pantry, mostly between 3–6 PM, and they started about two weeks ago." Specific information helps the technician find the source faster.
Also mention if anyone in the household has a pregnancy, chemical sensitivities, specific pets (especially cats, birds, or fish), or asthma. This directly affects product selection.
Applying your own over-the-counter spray before the technician arrives contaminates bait placements and repels pests away from areas the technician needs them to travel through. After treatment, additional spraying can interfere with the bait the technician placed — cockroach spray near gel bait repels cockroaches from the bait, sabotaging the treatment.
Specifically, never apply any spray or fogger within 2 weeks of gel bait placement.
Most pest control service contracts cover treatment, not exclusion. The technician treats the pests that are present but can't seal every gap in your foundation for the quarterly service fee. The exclusion work — caulking gaps, installing door sweeps, covering vents with hardware cloth — falls on you or a handyman. But it's the difference between solving the problem once and treating it every quarter forever.
Ask your technician to point out entry points during the visit. A good one will show you exactly where pests are entering so you can seal those gaps between visits.
Most quarterly service contracts include free callbacks between scheduled visits if target pests reappear. Many homeowners don't know this or feel awkward calling. Don't. This is literally what you're paying for. If ants return 3 weeks after treatment, call. If cockroaches persist after the second visit, call. Callbacks give the technician feedback that helps them adjust the treatment plan.
When a technician says "you need to seal that gap around the dryer vent" instead of "I'll spray more," they're giving you better advice. IPM-trained technicians prioritize permanent solutions over chemical dependency. A technician who recommends less chemical treatment isn't doing less — they're doing more thoughtful work.