Tenting for termites is a whole-structure fumigation process where a pest control company covers your entire home in tarps and releases a gas that penetrates every crack, wall void, and piece of wood to kill termite colonies. The process typically takes 24 to 72 hours from start to finish, and it’s the most reliable way to eliminate drywood termites, especially when infestations are widespread or hidden in areas that can’t be reached with spot treatments.
When Tenting Is Necessary
Tenting is primarily used for drywood termites, the species that lives inside the wood of your home rather than in the soil beneath it. Subterranean termites, which build mud tubes from the ground into your structure, are typically handled with soil treatments, trenching, and bait systems rather than fumigation.
The key advantage of tenting over localized spot treatments is that it doesn’t depend on finding every colony. Spot treatments work well for a single board or small cluster of boards where you can see evidence of termites. But current detection methods aren’t reliable enough to map the full boundaries of drywood termite colonies inside walls, attics, and other hidden spaces. If your inspector finds drywood termites in multiple areas, or if your home has been repeatedly treated with spot methods and termites keep showing up, whole-structure fumigation is typically the recommended path. It treats both the infestations you can see and the ones you can’t.
How the Process Works
A trained pest control team places large tarps over your entire home, sealing it as completely as possible. Once the structure is sealed, they release a fumigant gas inside. This gas is colorless and odorless, and it spreads throughout the home, seeping into cracks, pores in wood, wall cavities, and fabric. When termites are exposed to sufficient concentrations, the gas disrupts their cells’ ability to produce energy, killing them.
The home stays sealed long enough for the gas to reach lethal concentrations in every part of the structure. After the pest control professional confirms adequate exposure, the tarps come off and the fumigant disperses into the open air. It takes at least six hours for the gas to fully aerate from the house after the tarps are removed. Before anyone is allowed back inside, a technician tests every room with a clearance device that detects concentrations as low as 1 part per million.
From preparation through treatment and aeration, the entire process runs about 24 to 72 hours. Smaller homes in warm, dry weather tend to fall on the shorter end. Larger homes or cooler conditions push the timeline longer.
Preparing Your Home
You’ll need to vacate the house for the duration, and so will all pets, including fish tanks (or remove fish). Plants need to be taken out of the house and away from any outdoor area the tent will cover.
Food is the biggest preparation task. Anything in your pantry, fridge, or freezer needs to either be removed from the home or double-bagged in special nylon fumigation bags your pest control company will provide. The exceptions are items still in their original, unopened, airtight manufacturer’s seal: canned goods, glass jars, and sealed metal containers can stay as they are. But dry goods in bags or cardboard boxes, even if unopened, need to be bagged or removed. This includes cereal, chips, rice, pasta, and similar items. The same rules apply to medicines, pet food, and tobacco products.
A few other details people often overlook:
- Plastic-covered mattresses (like waterproof baby mattresses) need the covers removed or opened, because sealed plastic slows the aeration process and can trap fumigant.
- Plastic furniture covers on chairs and sofas should be opened or removed for the same reason.
- Gas lines and pilot lights must be turned off. All open flames and electric heating elements need to be shut down before fumigation begins.
Your fumigation company will give you a detailed checklist, but planning a day or two for food prep and packing alone is realistic for most households.
What Tenting Costs
Pricing runs roughly $1.00 to $2.00 per square foot, though the final bill depends on your home’s size, layout complexity, and infestation severity. For a general sense of range:
- Small homes (under 1,500 sq. ft.): $1,000 to $1,500
- Medium homes (1,500 to 2,500 sq. ft.): $2,000 to $3,500
- Large homes (over 2,500 sq. ft.): $4,000 to $8,000 or more
Structural complexity drives costs up. Homes with crawl spaces, basements, or large attics may add $500 to $1,500 to the base price. Multi-story homes cost more than single-story homes of the same square footage. Location matters too: urban areas with higher labor costs tend to run $2,500 to $4,000, while rural areas may come in between $1,200 and $2,500 for similar-sized homes.
If you’re dealing with a minor, early-stage infestation caught quickly, total costs might stay in the $500 to $1,500 range. Severe infestations with widespread structural damage can push the fumigation bill alone to $4,000 to $8,000 or more, not including any wood repair.
Safety After Fumigation
One of the most common concerns about tenting is whether chemical residue lingers on surfaces, cookware, clothing, or furniture. The fumigant used in structural tenting is a gas, and it doesn’t leave permanent residues. Once the home aerates and the technician clears each room with a detection device, the gas has dissipated. You don’t need to wash every dish or wipe down every counter, though many homeowners do a general cleaning simply for peace of mind.
The clearance standard is strict: technicians check for concentrations at or below 1 part per million before giving the green light to return. No one, including the pest control team, should enter the structure before this clearance is confirmed.
Long-Term Effectiveness
Tenting is highly effective at killing every active termite colony in the structure at the time of treatment. What it does not do is prevent future infestations. The gas leaves no lasting barrier in the wood or soil, so new termite colonies can establish themselves after treatment just as easily as before.
This is especially relevant for drywood termites, which have more potential entry points than subterranean species. They can fly into attic vents, gaps around window frames, and any exposed wood on the exterior of your home. After fumigation, the best protection combines regular inspections (annually in termite-prone regions), sealing cracks and gaps in the exterior, and maintaining or applying direct wood treatments to vulnerable areas. Some homeowners invest in an ongoing monitoring plan with a pest control company to catch new colonies before they spread.
Without these preventive steps, reinfestation is not a matter of if but when in regions with heavy termite pressure. The fumigation solves the current problem completely, but keeping the home protected is an ongoing commitment.