Questions About Pests, Visits and Safety at Home

One beetle on a windowsill in summer is usually a visitor. A problem shows itself by repetition: the same insect in the same room several days running, droppings that come back after a cleanup, or insects out in the open by day, when most household pests stay hidden. A note of where and when you see them says more than any single sighting.

Start where pests find water, warmth and food: under the kitchen and bathroom sinks, behind the stove and refrigerator, inside cabinets that hold food and along the cellar walls. Look closely at the gaps where pipes come through walls and floors. A flashlight held low, close to the floor, makes droppings and debris much easier to spot.

Take a clear photo with a coin beside it for scale, and keep a sample if you can do it safely, such as a few insects in a sealed bag or jar. Photograph droppings, shed skins and egg cases where they lie before cleaning up. To see what a sign usually means, match it to a service.

Clean a spot thoroughly, then check it again after a few days: anything that has appeared since is current activity. Fresh rodent droppings are dark and soft, while old ones are dry, gray and crumble at a touch, and fresh gnaw marks look pale and raw against older, darkened wood. In an older house, signs left from years ago are common and do not always mean pests are there now.

Not always. Dead cluster flies or lady beetles on a windowsill usually come from insects that spent the winter inside the walls and wandered toward the light, and a few dead cockroaches can mean a neighbor’s treatment pushed them over. Finding them in the same place again and again, or alongside live ones, is the sign to look further.

It is better not to. Many over-the-counter sprays repel insects rather than reach the colony, so cockroaches and ants scatter deeper into the walls, and the residue can keep them away from baits placed later. If you have already used something, keep the container so its label can be read at the visit.

Put open food into sealed containers or the refrigerator, and move dishes, utensils, toothbrushes and pet bowls out of the rooms being treated, or cover them. Clearing the counters near the stove and sink lets the cracks behind them be reached. The label of the product used decides what else needs covering.

No. Many visits involve only inspection, traps, bait or sealing, and some pests are handled without a spray at all. What is used depends on the pest and where it lives, as described in how we work.

Yes. Tell the landlord or building manager early, in writing if you can. Philadelphia’s property maintenance code generally makes owners responsible for pests before a home is rented and in the shared parts of a building, while occupants can share responsibility when their own housekeeping is the cause. In a building with several units, treating one apartment alone seldom clears the problem.

As long as the product’s label says, and no less. Many labels keep people and pets off treated surfaces until a spray has dried, and baits and dusts belong in cracks and voids out of reach of hands and paws. Ask which product will be used, and what its label says, before the work starts.

Mention anyone who is pregnant, very young, elderly or living with asthma or allergies, and every animal, including fish, birds and reptiles, which can be more sensitive than cats and dogs. That can change which product is chosen and where it goes, or whether traps and sealing are used instead. With medical concerns, ask a doctor or veterinarian as well.

Cover aquariums and turn off their air pumps during any spraying, since many insecticides are highly toxic to fish. Pick up pet food, water bowls and toys from the rooms being treated, and put them back once the label allows people and pets back in.

Out of reach. Bait stations used in the trade are locked, tamper-resistant boxes, but the bait inside can still poison a pet that gets into one, so they belong where pets and children cannot reach or move them. Snap traps can hurt curious paws and fingers, so ask where each one has been placed. If a pet eats bait, call a veterinarian right away and have the product’s name ready.

Ant trails into the kitchen are often the first sign of spring, along with winged ants or termites swarming near windows on a warm day. Insects that spent the winter in walls and attics, such as stink bugs, wake up and wander indoors, and wasp queens start new nests under eaves and railings.

Heat and humidity speed insects up. Cockroaches breed faster and the large ones come up from drains and sewers, ant colonies grow, fleas multiply in yards and on pets, and wasp nests reach full size by late summer, when yellowjackets turn aggressive around food and trash.

As the nights cool, mice and rats look for warm shelter near food, and fall is when scratching in the walls usually starts. Stink bugs, boxelder bugs and cluster flies gather on sunny walls looking for gaps to spend the winter in, and house spiders become easier to notice.

Indoors, yes. Heated kitchens and cellars keep cockroaches breeding through the cold months, and mice that came in during the fall stay busy in walls and ceilings. Outside, the quiet season is a good time to look for the openings they used.

Late summer and early fall, before mice start moving indoors, is the usual target, but a gap is worth closing whenever it is found. Mortar and many sealants need weather above freezing to set properly, so some outside work waits for a milder day.

Pennsylvania’s Department of Agriculture certifies the people who apply pesticides for hire, and registered technicians work under a certified applicator. Ask who will apply products in your home and whether that person is certified or working under someone who is; any company should answer that plainly.

It should name the pest, the areas to be treated, whether trapping and sealing are part of the work and how many visits are expected. Ask what happens if activity continues after the work, and what any recurring visits would include.

Sometimes, as with a single wasp nest. Cockroaches, mice and bed bugs usually need follow-up visits, because eggs hatch after a treatment and rodents take time to reach traps. A plan that includes a recheck reflects how these pests behave.

They suit homes and small businesses that want to stay ahead of problems rather than react to them: a house that has had mice before, a restaurant kitchen, a shop with regular deliveries. On each visit, bait stations and monitoring traps are checked and treated areas are kept under watch.

Which product was used and where, how long to keep children and pets away, where any traps and bait stations sit, and which signs mean the problem is not finished. Ask for the product names in writing so you can look up their labels later.