The first step in successful implementation of the fight against termites invading your home is to seal them in one place. While termites can go anywhere, they are usually in large masses in one place. Termites must also remain in wet and humid, so prefer hidden places that are out of high traffic areas or deep inside your walls. This can make them difficult to find, but their typically stay close to the rest of the colony.
If you're suspecting a need for termite control, there are some common indicators to look for. Termite damage is surprisingly easy to identify, but not as simple to track down. Once you find where the termites are entering and traveling through your home through, it will provide a good reference to investigate for similar damage around the home.
Termite damage is associated with some common features: worn surfaces of wood, trails of sawdust, tiny passages dug in the planks for wood are all indicators. They also travel in swarms and rarely leave their nest and colony in the moist hold they've built out. Termites also remain largely hidden, which is why they prefer to eat indoors rather than expose themselves to predators outside.