The "clown" called his father-in-law cuz he was mad at us. So the father-in-law (also a customer) called in reporting the same problem...heat tracks. (last treatment was over a month ago). When I got there this morning, I saw "heat tracks" alright, but it was from his 22" mower (not us). Mowing height: 2 1/2 inches. I not only saw wheel marks from his mower, but also "mower burn" from his mower blades. No sign whatsover from any sort of ride-on spreader/sprayer. I tried pushing the soil probe in the ground, but I could not. The soil was like concrete. So I left him a "service call report" of my findings. I also left him an Iowa State University fact sheet regarding "Proper care of lawns during summer months". Now here's the odd thing....a few hours after I left detailed information on his front door, he called our office & cancelled service. Said he NEVER saw anything on his front door from us. His son-in-law (prison guard) was also a liar, and now I'm seeing the XXX doesn't fall too far from the tree. We heavily rely on land grant university info just for clowns like these guys.