Start from what you see, not from the pest name. This guide lists the common signs in a Columbus home and points each one to the service and first step that fits, using the Ohio sources where they exist and stating the gap where they do not.
Key takeaways
- Bugs on the windows in autumn point to boxelder or leaf-footed bugs, which OSU describes.
- Winged insects on a sill point to a termite swarm, and an indoor swarm means a colony inside.
- Stink bugs in the attic point to the roof line, which is where the walk starts.
- A mud tube or hollow wood calls for an inspection, not a spray.
- Droppings and gnaw marks call for a rodent visit, with the species identified on the day.
- A sign not on this list is a reason to book an inspection.
Bugs in the windows and curtains in autumn
Small bugs in window tracks and curtain folds in the autumn are most often boxelder or leaf-footed bugs, which OSU says enter at doors, windows and soffits. The first step is to seal the entries and vacuum the bugs.
These bugs gather on sunny walls and come in through small gaps. They do not damage the structure or food, but crushing them can stain fabric. A homeowner who sees them should vacuum them, note the date and room, and book a sealing visit or walk the outside with a flashlight.
The service is boxelder and leaf-footed bug control, and the sealing and vacuum come first. A residual is a later step.
Winged insects on a windowsill
Winged insects on a sill or a floor may be termite swarmers, and OSU’s clinic says indoor swarmers mean a colony is inside the building. The first step is a sample and a same-week response visit.
Keep a sample in a sealed bag, photograph the location and close the window if it is safe. Do not spray the swarm. The technician confirms the insect and traces the likely entry.
The service is termite swarm response, and a full inspection follows if the response finds a source.
Stink bugs in the attic or upper rooms
Brown marmorated stink bugs are most often found in attics and upper stories, according to the OSU fact sheet as reported locally. They give off an odour when disturbed. The walk starts at the roof line.
Do not crush the bugs by hand. The technician vacuums them, seals the bag and checks the roof line, the eaves and the vents for the route in.
The service is brown marmorated stink bug control, and an attic-first visit is the usual form.
A mud tube, hollow wood or a soft sill
A mud tube on a foundation wall or pier, wood that sounds hollow, or a soft sill is a sign for a termite inspection. Do not spray or dig before the inspection.
The inspector follows the tube to the wood it reaches and probes the sill carefully. The report then says what was found and what is recommended, and it names the licence category for any treatment.
The service is termite inspection and treatment. A structural question, such as a soft joist, goes to the wood-destroying insect inspection.
Droppings, gnaw marks or scratching
Droppings along a cabinet base, gnaw marks on a food package or scratching in a wall or attic points to rodents. The visit traces the route and seals the entry.
The sources checked for this site did not cover Ohio rodent species, so this guide does not name them. The technician identifies what is present on the visit and records it.
The service is rodent control. Devices go along the path and the entry is sealed with a material a rodent cannot chew through.
Carpenter ant or a trail along a window
Large black ants along a window sill or a beam may be carpenter ants. The sources checked for this site did not give Ohio guidance, so the visit follows the trail to its source and reads the wood.
A sample confirms the group. Frass or sawdust under a window, or soft wood around a frame, is a reason to ask for the wood to be checked as well as the trail.
The service is carpenter ant control, with a wood inspection if the wood is damaged.
Anything that does not fit these
A sign not on this list is a reason to book an inspection. The technician identifies the problem and says what the Ohio sources do and do not cover.
The guide covers the patterns the sources describe and the common services this site offers. Where the sources are silent, the page says so and an inspection is the way to find out.
A dated note of what was seen, where and when is the most useful thing a homeowner can bring to the first call.
Signs in the basement, the crawl space and the attic
Activity found below or above the living space points to a building-level route, such as a pipe penetration, a vent, a window well or a joint in the sill. The walk starts where the sign is found and follows it outward.
A basement is often where the first sign appears, because it is cool, dark and close to the ground. Droppings, soft or dark wood, mud tubes and standing water are each a reason to book an inspection, and the report records each location.
An attic is the other place to look. A rodent route in an attic often runs along the roof line or the vents, and a wasp nest may sit in an eave near a vent. The technician checks the attic from the hatch and notes any sign that suggests a route into the house.
A smell with no clear source
A musty or sweet smell in a closed room, or in the garage, can come from stored food, a dead animal inside a wall or a damp area. The visit checks the likely places and records what is found.
A smell in a cellar can come from a damp floor, a stored item or a drain. The technician checks the likely places, and if the source is outside pest work, the report says so and recommends the right kind of help.
A smell that is strong and sudden is a reason to call the same day, particularly if a person in the house is unwell. The visit does not diagnose the smell, but it records the place and the time.
Several signs at once
Two or three signs in one house can have one cause, such as a moisture problem that draws several insects, or a gap that lets several kinds of pest in. A single inspection should look for the link.
A damp corner with stinkbugs, ants and a mud tube may be one wet place that attracts several pests. The technician looks for the shared condition first, then the separate services.
Where signs are unconnected, the report separates them, so the homeowner sees which service applies to which sign and in what order to deal with them.
What to write down before the first call
Write the date and place of each sign, what was seen, whether it was inside or outside and whether anyone else in the house has noticed it. A short note is enough, and it saves the first visit time.
A photo of the sign and a dead specimen in a sealed bag are the two most useful additions. A specimen confirms the group, and a photo shows the location in a way words cannot.
A note of the time of year and the weather is also useful, because the Ohio sources tie several pests to the season, and the technician can compare the note with those patterns.
Pests in a yard, a garden bed or a pond
Signs in the yard, such as mounds, trails along a patio joint or standing water with larvae, point to outdoor sources. The visit treats the source outdoors and checks the house wall next to it.
A mound of soil at the base of a wall or a patio joint can mark a colony outside the house. A trail that runs from the yard to a door is a route to follow. The technician reads the yard first and the house second, because the source is often out of doors.
Standing water in a bucket, a gutter or a low corner of the lawn is a mosquito breeding site. The homeowner empties the containers and clears the gutters. The visit checks the same sites and records any that cannot be drained.
Frequently asked questions
I see one bug. Should I book a visit?
One bug is often not a problem. A pattern of several, or a repeat sighting in the same place, is more useful to report. Keep a dated note and book if the pattern continues.
Can I tell which pest it is from a photo?
A photo helps, and a technician can often identify the group from it. A dead specimen in a sealed bag is more useful, because it can be examined closely.
Which symptom is the most urgent?
A swarm indoors calls for a same-week response. A nest near a door or a person with a severe sting allergy calls for a same-day response. Other signs are booked promptly.
Does this guide cover every pest in Columbus?
No. It covers the patterns the Ohio sources describe and the services this site offers. Other pests are handled on their own pages, or by an inspection where the sources are silent.
Does a backyard source mean the house is at risk?
Not by itself. An outdoor source near a wall can send insects in, and the visit checks the wall and the gap where they would enter. The report says what was found and where.
What is the first thing to do when a sign is seen?
Note it with the date and place, keep a sample or a photo if it is safe to do so, and avoid spraying or wiping the trail. Then book the visit that matches the sign.
Can I wait for the next season to deal with a sign?
Not for a swarm or a mud tube, which need prompt inspection. A minor sign such as a single insect can be noted and watched, provided the note is dated and the pattern is checked.
Sources
- Ohio State University Extension (ohioline.osu.edu)
- Ohio State University Plant Pest Diagnostic Clinic, eastern subterranean termite identification (ohioline.osu.edu)
This guide is general information for Franklin County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.