They are mainly SleepSac spiders. Thankfully they don't do webs and they stay up along the cieling. They are coming from the basement in a straight line. The way the basement stairs are made its impossible to reach them. Even with a full size ladder and my 5'11 son. The ceiling is way too high. Stupid stupid design. So far we had the exterminator spray twice. We cut down two really old umbrella trees outback to get rid of the carpenter ants. And I have killed every single bug I have come across.