I've used TruGreen for a year now, and I'm not really impressed. I believe we pay $80 per treatment and they come every 6-7 weeks. My Bermuda is thicker, clover has been greatly reduced, but they did not put a dent in the crab grass. My hope was that a full year of pre-emergent and fertilizer would get rid of the crab grass. Maybe I expected too much.
Also, there was the incident of an overzealous sales rep. I have 2/3 of an acre but was only going to have the front yard done. He comes out says we need to treat for scale on our crepe myrtles, and says by the way, it is silly for them not to spray our whole yard if they were already out there. I told him no thanks on the scale treatment, but that would be awesome if they would spray the front and back for the same price as the front. I gave Home an out and said that I understood if treating the backyard was conditional upon the scale treatment, but he said it was no big deal. I asked specifically how long they would do that, and he said as long as we wanted.
Next treatment time comes around and they only spray the front yard. My wife calls them and they stop just short of calling us liars. Ultimately they said they would treat the entire yard for one year, but after that, they were done because they were losing money on my yard. We are going to cancel here pretty soon, and I may be asking for a refund due to the overall poor results and customer service.