I only call in advance for customers with dogs in the backyard or locked gates. The main reason being: this time of the year, so many of the ones I have to call in advance give me this response, "Oh, I think we are just going to skip this round." Really? Do you not realize that each application is timed for a specific purpose? Do you not realize that you are going to be calling me in the spring, or in a few weeks or who knows when complaining about your lawn again? Do you not realize that my income is based on people paying me for the service that they ask me to perform at the beginning of the year? Do you not realize that if every customer cancels the day before service that I am stuck with 10's of 1000's of dollars of chemical? What do you fellas do in this situation? I think I am going to start billing them anyway.