I've been speaking to a guy in Denmark for a month or so about a product that he has a patent for. It is a weeder that uses thermal radiation for weed control. At first I was skeptical. I knew from agriculture that flamers and steamers have been used with good success for erradicating weeds in crops, but their lawn applications seemed limited by safety, lisencing to carry/store propane, and affordable small scale units. As I looked more deeply, I could see the benefit of using ultraviolet light as a solution. Has anyone out there heard of this technology? What are your thoughts?