I have been using Snyder's Weed Control for about seven years now, and for good reason. They spray the front and backyards of both of my properties. They have me on schedule where I don't have to remember about calling them before it's too late. They're proactive, and keep a calendar, which I am too lazy to do, which works out pretty well. I rarely have to have them come back in and do anything, but I they do it's free of charge. I have never had a problem with them.