Dave , I have the "original driveway alert" and have used it for about 3 years. Their "heavy duty" one will go around a building and does not have to be direct line like most. I have been very pleased with mine. Bought it specifically because I have buildings in the way.

Dear Alcohol, We had a deal where you would make me funnier, smarter, and a better dancer... I saw the video... We need to talk.