DIY Termite Treatment: What Works and What Doesn't
You can do a lot about termites yourself. Treating an active colony under a house usually isn't one of them. The line between the two is clearer than most product ads suggest, and knowing where it falls saves both money and a second, bigger bill later.
The short version
DIY works for prevention and monitoring: fixing moisture, breaking wood-to-soil contact, clearing debris and inspecting. It rarely works for an active subterranean infestation. A proper soil treatment takes hundreds of gallons and drilling, the main professional termiticides are labeled for licensed applicators, and Kentucky's entomologist says baiting is best left to professionals.
On this page
Why soil treatment is hard to do yourself
A liquid termite treatment isn't a spray. It's a continuous chemical barrier in the soil around and under the whole foundation, and the volumes are large. North Carolina's standards call for 4 gallons of diluted termiticide per 10 linear feet for each foot of depth, down to the top of the footing or at least 30 inches. On a 200-foot foundation treated 30 inches deep, that works out to roughly 200 gallons. A University of Arizona example for an existing house on a floating slab used 216 gallons.
Getting that much liquid into the right soil means trenching, rodding, drilling slabs at close intervals and injecting block voids. North Carolina's agriculture department advises homeowners not to attempt it, noting it takes specialized equipment such as a 100-gallon tank and pump. And the most common professional termiticides carry labels limiting them to licensed applicators; the details are in can anyone buy Termidor.
DIY options and what the research says
From University of Kentucky, University of Arizona, NC agriculture department and Texas A&M guidance.
| Approach | Does it work? | Why |
|---|---|---|
| Fixing leaks, grading and wood-soil contact | Yes | Removes the moisture and access termites depend on |
| Inspecting and monitoring | Yes | Finds problems early; costs a flashlight and a screwdriver |
| Replacing damaged wood after treatment | Yes | Carpentry doesn't need a pesticide license |
| Spot-spraying mud tubes or visible termites | No | Kills foragers, not the colony in the soil |
| Retail bait stakes | Not as sole protection | Their own label says so after a 1999 settlement |
| Soil treatment with a bought concentrate | Rarely | Needs large volumes, drilling and equipment |
| Home remedies like bleach or vinegar | No | Kills what it touches and nothing else |
More on the home remedies in does bleach kill termites.
The truth about store-bought bait stakes
Retail bait stakes are the most popular DIY product, and University of Kentucky entomologist Michael Potter has looked at them closely. One widely sold brand puts a slow-acting bait in a cardboard core inside a plastic stake, with boxes of 20 to 60 stakes for under $100. Termites have to find the stakes by chance, since they can't see or smell bait from any distance underground.
The key fact is on the label. After a 1999 settlement with the Federal Trade Commission and several state attorneys general, the label says the product is "not recommended as a sole protection against termites," and for active infestations it advises an inspection and professional treatment. Potter adds that termites feeding on a stake in the yard don't tell you whether they're in the house, and that successful baiting takes careful installation, monitoring and refilling. His conclusion is that baiting is best left to professionals. How professional systems work is in termite bait stations.
What you can genuinely do
The parts of termite control that don't need a license are also the ones that cost least and last longest:
- Dry things out. Fix leaking faucets, AC drips and gutters; grade soil away from the house; keep sprinklers off the foundation.
- Break the bridges. Keep wood siding, steps, posts and trellises out of the soil, and keep a visible gap between stucco or foam and the dirt.
- Clean up under the house. Remove scrap wood, form boards and cardboard from crawlspaces.
- Inspect. Walk the foundation a few times a year and look in the crawlspace. See how to inspect for termites.
- Repair after treatment. Replacing damaged trim or subfloor is ordinary carpentry. See termite damage repair.
These matter even if a company treats the house. The full list is in how to prevent termites.
Tools for the parts you can do
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Pin-type wood moisture meter
Wood that reads above about 20% is wet enough to invite rot and termites. Great for sills and subfloors.
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Awl or flat-head screwdriver
Press it into suspect wood. Healthy wood fights back. Eaten wood gives way like a stale cracker.
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Bright LED flashlight, 1,000+ lumens
The one tool that really matters. A tight, bright beam shows mud tube texture and wing piles in dark corners.
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Crawlspace or basement dehumidifier
Dry wood is the cheapest termite protection there is. Aim for wood readings under 15%.
When to stop and call someone
Call a licensed company, or two or three, when you see:
- Mud tubes on the foundation, piers or walls
- A swarm coming from inside the house
- Damaged wood with mud packed in it
- Pellets from wood, which point to drywood termites
Extension entomologists consistently recommend more than one inspection and quote before you choose. Kentucky also warns against companies that use pressure or scare tactics. The questions to ask are in questions to ask a termite company, and the costs are in termite treatment costs.
Doing it yourself
Do
- Fix every leak and drip near the foundation
- Keep wood and stucco out of contact with soil
- Inspect the crawlspace and foundation regularly
- Replace damaged wood once the colony is treated
Don't
- Spray mud tubes and call it a treatment
- Rely on retail bait stakes as your only protection
- Use a termiticide labeled for licensed applicators
- Treat harmless species just because they're close to the house
Questions people ask
Can I treat termites myself?
You can prevent them and monitor for them yourself, but treating an active subterranean infestation is hard. A proper soil treatment takes hundreds of gallons of termiticide, drilling and special equipment, and the main professional products are labeled for licensed applicators.
Do DIY termite bait stakes work?
Not as your only protection. After a 1999 settlement with the FTC and several states, one popular brand's label says it's not recommended as a sole protection against termites. Kentucky's extension entomologist says baiting is best left to professionals.
What is the best DIY termite prevention?
Moisture control and breaking wood-to-soil contact. Fix leaks, grade soil away from the house, keep wood off the ground and clear debris from under the house.
How much termiticide does it take to treat a house?
A lot. North Carolina's standard is 4 gallons per 10 linear feet for each foot of depth, which comes to roughly 200 gallons for a 200-foot foundation treated 30 inches deep.
Keep reading
Termites in your state
Sources
- University of Kentucky Entomology: Do-it-yourself termite baits, do they work? (EF642, revised 2026)
- University of Kentucky Entomology: Termite baits, a guide for homeowners (EF639, revised 2026)
- University of Kentucky Entomology: Termite control, answers for homeowners (EF604, 2018)
- NCDA&CS: Post-construction subterranean termite control
- NCDA&CS: Pre-construction subterranean termite control
- University of Arizona Cooperative Extension AZ1357: Liquid termiticides costs (2005)
- University of Arizona Cooperative Extension AZ1356: Termite management for homeowners (2005)
- University of Arizona: Statewide termite survey (Baker)