I recently found that my house has termites. I am having it treated by an exterminator. This exterminator has beent he same ones that were supposed to be treating the houe to avoid this, so I'm having a hard time trusting them. I know that there, at a minimum, is drywall damage. How do I go about making sure this is taken care of correctly? How do I know if beams needs to be replaced in addition to the drywall? Also, what is the best method to exterminate termites? Seeing as the exterminators did not do what they were under contract to do in the first place, I'm not sure that they will do what is necessary to really get rid of them.