Termites are persistent. They are patient and industrious and will not rest until they have devoured all wood and paper. Because of the way they work, you do not notice their presence until damage has already been done and your precious possessions are irrecoverably damaged. You can call in a pest exterminator or a termite control expert or do it on your own. You will save money and you can do a thorough job.
Chemical based approach for termite control
One of the most common chemicals used to eliminate termites is chlorpyriphos. This is highly toxic so make sure it does not contaminate water or foodstuff. It is best used on the exteriors and for below the soil treatments for termite control. However, these days there are other chemicals used for killing termites. These are chlorfenapyr, imidacloprid and fipronil. These chemicals work on the nervous system of termites and kill them. Use a pressure injection system to push the chemicals deep into walls, foundations and soil. A simple grease gun with a zerk coupler will serve the purpose of achieving high pressure injection.
There are more exotic methods such as using high voltage pulses to kill termites, liquid nitrogen to freeze and kill termites by spraying it into tunnels, microwaving them and use of high temperature.
Termites build their nest deep underground. It is highly likely that even pressure injection will not reach that depth. Termite control experts lay bait to catch termites that have escaped. The bait is usually placed around the places frequented by termites and around openings. The baits contain insect growth regulators or toxins and metabolism inhibitors that result in death. Sulfluramid, fipronil and hydramethylnon based baits can be used. If you are concerned that these might be toxic then you can use home grown bait using powdered borax or boric acid mixed with sugar. Strew it around egress points. Termites eat it and carry it to their nests. Borax interferes with the digestive system and results in their death.
Preventive termite control
Rather than wait for termites to put in an uninvited appearance, go on the warpath and take preventive termite control measures. If you have wooden furniture, you can use water based borate formulations as a protective coating. When painting the walls mix the paint with DE, a termite prevention chemical. Check for presence of termites and even if there are no traces, if the area has a history of termite infestation it is likely they will find their way into your home. Invest time and effort in injection pumping chemicals into the basement and walls skirting the basement, both inside and outside. Also pump the chemical into the ground at least a foot away from the walls. Termites need water so it pays to ensure everything is dry in the basement and in the walls. It may not be possible to keep your garden soil dry but you can soak the soil with imidacloprid. Make sure there are no leaks in the plumbing and drainage lines inside the house. Orange oil is another material that termites do not like. Spray all crevices, joints, floors and wood with orange oil at least once a year. As a matter of fact, termite control should be an exercise you carry out once a year by using orange oil, borax or any other chemical formulation because the effects of the chemical are not permanent.
If you decide to do it on your own you can save a lot of money, but you may miss crucial spots that a professional termite control experts will not. This is why it is, perhaps, worth paying them for a thorough job.