Drywood termites are notorious for their capability to completely damage wooden items and furniture. Unlike other species of termites, drywood termites require very little amount of moisture for survival. The major problem is that drywood termite infestation does not become apparent until the termites reach outer surface of the wood. By the time they're detected, it's too late to carry out any preventive measures against termites.
Drywood termite infestations can be controlled either by using whole house treatment or spot treatment. Whole house treatment becomes necessary when the drywood termites attack structural wood. Spot treatment is carried out only if a particular area, wooden material or furniture gets infested. The treatment types can be adopted according to the place of infestation.
Fumigation treatment is an ideal whole house treatment option. This particular technique has been employed by exterminators for the last 40 years. Fumigation kills about 99% of termites in the building or house, and may require up to 2 days to achieve the desired results.
The whole building is wrapped in a gas-tight tarpaulin or tarp. Once the building is made air-tight, a poisonous gas is released inside the building to kill termites from every corner of house. Although fumigation is an effective termite treatment option, the gas is also toxic for animals, plants and even humans. The building needs to be vacated during the entire process, and no food items can be kept inside the house during fumigation.
2. Heat Treatment
It is a type of spot termite treatment in which the affected area or items are covered with polyethylene or vinyl sheets. Temperature probes are then inserted inside the cover to generate an excessive amount of heat with a high-output propane heater, which instantly kills the termites. Once the target temperature is achieved, the area is rapidly cooled to prevent any structural damage. This treatment is ideal for attics, porches or bedrooms, or if the people residing in the house are allergic to pesticides.
3. Cold Treatment
This spot treatment technique is used for treating hard to reach places like wall voids or similar small enclosures in buildings. Liquid nitrogen is pumped into voids, which instantly freezes and kills the termites.
4. Wood Injection
Also known as "drill and treat," this technique is ideal for easy to reach places. Small drill holes are made on the surface of infected areas. A pesticide is then injected into the surface. This treatment option is not viable for antiques or expensive furniture.
5. Borate Treatment
Borate treatment is done by applying a spray or foam application of borate directly on the surface of the raw, uncoated and infested wood.
6. Microwave Treatment
Bombarding a specific area with microwave energy instantly kills the termite. However, the method can be applied only on easy to reach places.
7. Electrocution Method
In this treatment, a hand gun of high voltage and low current energy is passed slowly over the infested wood surface. The surface is pre-injected with metal pellets.