Ken, I think that they do, by default, attach to the wall via double-sided tape. But I just drilled through the plastic back on the raceway and into the wall. Then I attached the back half of the raceway using a screw with a washer so the "hold" on the raceway was distributed over the washer instead of just the screw head. The plastic on the back of the raceway is relatively soft and I wanted to make sure the raceway couldn't pull off by accident.
I figured it always easier to patch a small screw hole than deal with removing the sticky tape if it was ever to be replaced.
