My concern with cheap programs is that no matter the price, I am still accountable for results. Do not like to get into "this will cost you extra" or "what about that type of weed?" Atrazine, simazine, prodiame. and Three Way cover a limited spectrum of weeds found in centipede. Right now, I have got a 1/4 acre centipede lawn from h-l. It got Tenacity last week and I will be doing it again week after next. That will be followed by Celsius or Manor and Dismiss depending on what is still left in the lawn. To the OP: any yoyo can pour a bag of fertilizer into a spreader. You had better believe the knowledge needed to do weed control is worth something. Not to mention doing it selectively. People have been told that a herbicide costs x dollars per ounce and what value do they care to assign to knowing how to apply said product so it controls the weed and not remove the lawn.