ATand R was fantastic. My townhouse is very narrow and tall (4 stories), and ATand R must have had to make at least 20 trips to the roof. They set a trap and check it every day to see if a squirrel had been caught. The trap eventually caught one squirrel, but a second squirrel was much more elusive. At one point, it seemed that the second squirrel may have eluded the trap, exited the dormer (probably for food), then re-entered. ATand R set up a more sophisticated trap for the second squirrel and eventually it was caught. They then patched the dormer -- it was basically the place where the dormer met the roof, and they used some sort of metal to ensure that a squirrel could not chew through it. Four years later, I am still squirrel-free. I really appreciated that ATand R set a flat fee upfront, and never charged a penny more, despite the difficulty of the job.