The tech, Corey Box, came to my door prior to beginning. Told me what he was going to do. As always, he was careful about my flower beds. After last year working closely to kill poa annua I don't have any this year. No other spring weeds either. This is the first time in 20 years to not have spring weeds. A glance at my neighbors' lawns shows me the crop of weeds they are growing.