I've been using Snyder's Weed Control for about five years. Every time I call, they always set up an appointment that is convenient for me. They arrive on time, and they are polite. If I wasn't going to be there, they leave the invoice on the door. One time I watched when they applied the pre-emergent, and they did a good job! Since they did the pre-emergent, I've had no weeds. One time there were a few weeds that came up in a spot, and they came back and reapplied the pre-emergent in that area.