They are not professionals- they were just another guy hired off the street. I found bed bugs in my home, took them to be identified to ensure they weren"t bat bugs days before my home was inspected. They found no bugs in my home except the ones I caught and argued that there is no such thing as bat bugs. Bat bugs are the non distant cousin of bed bugs, almost identical to the naked eye in appearance, you need a microscope to see the difference because the only difference is the hair length. If you don"t know your bugs don"t become an exterminator.