Well, last year I came to the board looking for some assistance with my sedge problem, and I'm back again. My post from last year for some history of the problem: http://www.lawnsite.com/showthread.php?t=350623 I chickened out on applying the chemicals myself, and hired what I thought was a "professional" company. This company has the best reputation in my area, and from the information they provided, were using the same products recommended by the professionals on this board I trust. To make a long story short, their service has been lackluster at best. I have not received nearly the level of services their salesman advised I would receive. I suppose mediocre would best describe the level of service I have received. I could write a huge post detailing all the problems, but I'd just rather forget about it. Some things they did exceptionally well, others were poor. Then, in March of this year, this is what their fancy self-propelled granular spreader did to my centipede lawn. Needless to say, this was just the last straw for me. I have let their contract expire of course, but I have an additional concern. Most of my lawn is starved of nutrients where no fertilizer was applied. This being centipede and subject to decline, I am afraid to add any additional nitrogen this year as it may kill or damage the lawn. I do see some limited reddening of the blades in the unfertilized areas which I believe indicates a potassium deficiency. Is there any product available that I can apply that will green the lawn and help with nutrient deficiencies without adding nitrogen? When I complained to the company that did this, they sent out a truck with liquid iron and kind of evened the color out, but that only lasted about a month. Also, I have had to irrigate far more heavily than usual to keep up with the excess of fertilizer to prevent the lawn from getting burnt. Of course, this exacerbates my globe sedge problem, and it is rampant again. Is there a professional on the board that might help me with my problem? Maybe "coach" me in caring for my lawn? I have given up on finding a good company to handle my lawn as my choices are very limited in my sparsely-populated town. Since I have used the "best" available here and see what that looks like; I am ready to give this a try myself. In the past year I have really studied up on the label requirements of the Celcius and Certainty products that have been in use on my lawn. I am certain that if I want this lawn done right, I'll have to do it myself. I will say that I am amenable to getting myself set up with whatever equipment is required to do it right, and learn how to apply exactly as required. From using the search function, it appears that customized spray rig Greendoctor built would be the ticket. Since I have near 24,000 sq ft of turf to treat, that would probably be my best bet too. Again, this is just a call for assistance. I have tried to hire my lawn service out, but it just isn't working due to the poor selection of professionals in my area. If you can help, please shoot me a PM or email through the board. I do appreciate any replies.