I have been servicing this client of mine for 12 years. Every year she buys the fertilizer and weed control and has me put it down. No problem for me, only takes 20 minutes and I charge her $15 bucks for it. But for the last couple years she has had really bad dandelions and I have to put down a second app of weed control and that doesn't work. What I would like to know is if I should call an actual company and have them come out and do a weed control or maybe a pre-m. Would that work. I'm afraid if it isn't done it will be bad again this year. The client says to do whatever I think is right. She doesn't have a company do the fert and weed control cuz of $. She thinks she's saving some big bucks. I don't. Please Help.