The short answer
The useful question isn’t which insect it is — it’s where it lives. Something eating your lawn from below is a product-and-timing problem you can almost always solve yourself. Something on the perimeter is sometimes yours. Something already inside the structure is licensed work, and the order you do it in matters more than what you spray.
Yard pests
Usually yours to treat
Perimeter
Sometimes yours
Inside the structure
Licensed work
Quarterly contracts
Cover one of the three

Which of the three is it?
This decides the product, the timing, and whether it’s worth paying anyone.
Do it yourself
In the turf
Grubs, chinch bugs, sod webworm, armyworm. Two free tests identify them, the products are on the shelf, and timing matters more than which bag you buy.
Depends
On the structure
Wasps, spiders, carpenter ants, scorpions. A visible nest within ladder reach is yours. Anything in a cavity or above ladder height isn’t, and the difference is the location rather than the insect.
Licensed
Inside the envelope
Roaches, bed bugs, termites, rodents. Products a homeowner can’t buy, inspection or disclosure obligations on sale, and an order of operations that puts the problem in the room if you get it backwards.
What a quarterly contract actually covers
The gap between what people think they bought and what the contract says is the single most common complaint in this category. A quarterly programme is a perimeter programme — it treats the band of wall and soil around the building.
Grubs in the lawn, mosquitoes, ticks and termites are, in most contracts, separate line items or separate contracts entirely. Which is why people who bought “quarterly pest control” in March are surprised in July. Ask which of those four are included before you sign; the honest answer is usually none of them.
Before you sign anything
Five checks, and the last one is the sharpest.
Establish which of the three
Turf, perimeter or structural. Everything downstream depends on it, and a company that quotes without asking hasn’t decided how to do the job.
Ask what’s excluded
Specifically grubs, mosquitoes, ticks and termites. Get the answer before signing rather than in July.
Ask how they decide to treat
Inspection and thresholds, or a fixed calendar. Same price, different products.
Ask what to change yourself
Sealing, drying damp wood, exterior lighting, standing water. The highest-value work in pest control isn’t chemical and never appears on a quote.
Ask what happens with no activity
A company that skips or reduces a visit when nothing is happening is running an approach. One that doesn’t is running a route.
What a standard contract includes
Where this stops being a DIY job
Anything inside a wall, void or crawl space. Sealing an entry before the population inside is dealt with drives it further in rather than out — true of rodents and of a wasp colony alike. That’s an order of operations, not a product, and getting it backwards puts the problem in the room.
Carpenter ant frass with soft wood behind it. At that point the ants are a secondary finding and you have active water damage in a structural element.
Anyone in the household with a known sting allergy, and an active nest on the property. Not a cost comparison.
What a professional does differently
First
Identifies before treating
Ground nests get dust, aerial nests get aerosol, turf insects get timing. The wrong one scatters the problem instead of ending it.
Then
Treats the entry point
Not the visible nest. Returning foragers carry material inward; treating a wall’s surface treats plasterboard.
After
Returns before sealing
Traffic has to stop before a cavity closes. That’s a second trip, and it’s usually the difference between two quotes.
Common questions
What does quarterly pest control actually cover?
The perimeter of the building — the band of wall and soil around it. Grubs, mosquitoes, ticks and termites are separate line items or separate contracts in most cases.
Do I need pest control for my lawn?
Usually not. Turf insects are identified with two free tests and treated with products on any shelf. Timing decides the outcome far more than the product does.
What’s the difference between pest control and wildlife removal?
Insects against animals, and different licensing. If it’s digging, denning or in your attic, that’s wildlife — often a different company even where one business offers both.
When is pest control genuinely worth paying for?
Anything inside the building envelope, anything above ladder height, and mosquito or tick work where the job is habitat rather than a spray.
Some of this is worth paying for. Most of the lawn isn’t.
Something inside a wall or crawl space, carpenter ant frass with damp wood behind it, or a yard where mosquitoes and ticks need habitat work rather than a schedule — those are worth the call. Turf insects and spiders are a timing-and-product problem the guides here will get you through.
Call (877) 360-4657
Related
Stinging
Wasp & hornet nest removal
Paper wasp, hornet or yellow jacket — and the one you can’t touch.
Pest Control by state
Licensing, seasonal timing and local exposure differ by state. These pages cover what changes where you are.