[humble]

and then spray until the foam fills the tunnel and begins to come out through one of the holes.
Termicide Foggers: Boats are relatively small, enclosed spaces, which means foggers can sometimes be effective. Remove any absorbent materials, such as bedding or cushions, and seal with plastic and tape to make it airtight. Activate the fogger and beat a retreat, leaving the fogger to do its work as directed by the manufacturer's instructions.
Termicide Baits: Baits provide a less intrusive option. They usually pair a termite-friendly food with a potent termicide, which is taken back to the nest and eventually destroys the colony. A great virtue of bait traps is that you can continue to use your boat normally while they do their work.
* Heat Treatment: Bringing the boat to an internal temperature of 120 degrees Fahrenheit for at least 33 minutes can also kill the colony through heat. This can be difficult to do on the water except in very hot climates, but if you have a suitable boat shed you may be able to try it on land with hot-air blowers and space heaters. Don't leave the boat unattended, because of the fire risk.
[links]

[meirpolaris]

The termites that invade homes are subterranean termites. They're not normally an issue on boats because they live underground, and boats are seldom in contact with the ground for long enough to be invaded. The usual culprits on a boat are drywood termites, which grow wings during swarming season and can arrive on your boat like any other flying insect. They shed their wings when they find a suitable habitat, so finding pairs of wings on your deck or in odd corners of your cabinetry is a definite warning sign. Mounds of what appear to be sawdust appearing spontaneously on your boat give you another clear alert. That's termite feces, or "frass," and you'll usually see small holes in the wood where it's expelled.

[Troyroder]

Termicides can be harmful if they're used carelessly. If you're working with a termicide spray, make sure the area is well ventilated and follow the manufacturer's safety instructions. At a minimum, you should wear gloves and safety eye wear, and if you're treating multiple nests it's a good idea to come topside for fresh air between applications. With a fogger product, remove the plastic after the allotted time, and open the hatches and portholes to ventilate the interior for a few hours before you return to the boat.

[Loki]

Spray-In Termicides: For limited infestations, another option is to spray termicide directly into the colony through the holes the termites use for pushing out frass. These termicides come with a thin straw you'll insert through the hole – [links]

[edgeleyx]

Drywood termites spend most of their lives tunneling within the wood, and it can take years before you detect evidence of the colony. Once you've found your first pile of frass, inspect the boat diligently for more. You might have one localized colony, or the pests may have spread throughout your boat – and that, in turn, determines how much effort you'll need to put into getting rid of them. more

[loadingpicker87]

The days of "wooden ships and iron men" are long in the past, but most recreational boats still have enough wood within their construction to serve as a home for termites. Even fiberglass boats make extensive structural use of plywood inside the hull, and deck hatches, cabinetry and furniture can all host termite colonies. Killing termites on a boat is no small job: There are plenty of consumer products that may help, but sometimes you'll need a professional exterminator's assistance.

[ravi2010]

Before you use bug bombs, be sure to read the product’s instructions and safety information carefully. Do not use more than is recommended for the interior square footage and don’t place them in small spaces such as a cabinet or a closet or under a table. Leave interior doors open so the product can expand from one room to another. As an extra precaution, disconnect your batteries and shore-power cable while the bug bomb is deployed, to avoid accidental ignition of the termicide or its dispersing propellant.

[Rio88]

Use a flashlight to look into crevices for signs of termites.

[spaceshaker]

During the summer, Southern California had weeks of 90- and 100-degree days. While I can’t definitively say the interior wood reached 120 degrees, I figure the high temperatures sustained for longer periods of time killed any termites that survived the foam and fumigator treatments.

[insert]

Using a straw applicator to inject termicide foam into holes is a good first step before fumigation.

[rydiamage]

Online, I found the Structural Pest Control Fact Sheet on Termites, published by the state of California’s Department of Consumer Affairs. The document stated, “Fumigation and heating … are the only options that ensure eradication in the entire structure.” here

[kseistrup]

Last summer, I found evidence of guests most undesirable on my boat. They were careless, leaving holes in my walls and making messes throughout my boat. Termites are the worst guests.

[AyKarsi]

While we can't tell you whether or not to use a fogger, we can explain some things about foggers and how to use them safely to help you decide.

[livingsoulnation]

Total release foggers are approved for use against a variety of indoor pests, including bed bugs. Not all foggers are labeled for use against bed bugs, so you need to read the label before purchasing a fogger to ensure you are getting one that lists bed bugs on the label.

[XaviorPenguin]

We register all pesticides to ensure they are safe to use, presuming you follow the label directions. This includes foggers (the full name is "total release foggers," to distinguish them from pesticide application equipment that is designed to emit a fog-like pesticide spray, but is under the control of the user).

[maxidresses]

For many of us lucky Floridians, summertime includes weekends and vacations on the water with family and friends. Nowhere else in the country is boating more popular than right here in Florida where water surrounds us. As a long time sailor and boating fanatic, I want to take just as much care with my boat as I do with my house. Today, let’s talk about pest control for boats.

[chromicant]

On a boat, sources of wood can range from interior furniture components to structural members. Here, the transit tunnels are often easily seen, as the termites move from moist areas near the bilge to wooden areas in the cabin or above deck. On infrequently used boats, I’ve even seen these tunnels form over engines and transmissions. more

[davidsoul434]

Yes, even if your boat is fiberglass. here