Termites live off cellulose food sources, the prime example of this being strong.
Once they get inside they breed quickly and lay hundreds of eggs allow hatch within a few periods. Some ingenious planning will are part to trick them under you control. https://Wiki.insidertoday.org/index.php/Reasons_For_Hiring_A_Pest_Control_Company_For_Your_Treatment_Of_Domestic_Pests