I own a small residential lawn & landscape maintenance business in West Tennessee. I have a few customers who insist on do-it-yourself fertilization and weed control. Needless to say, they usually do OK in the fertilization department and almost as well with post-emergent applications. But they almost almost always fail with the pre-emergent applications. So I end up with Spring weeds clogging up my mower deck till the heat kicks in and kills them. I have tactfully tried to get these few folks to just hire a professional for their lawn treatment, but they take pride in doing it themselves... or something like that. Hopefully, someday soon, after considering the time, material cost, scheduling, and storage involved in DIY lawn treatment, they'll realize that the cost of a professional is easily justifiable. Untill then... What's the best Weekend Warrior (Lowe's, Home Depot, etc.) pre-emergent that I can urge the DIYers to apply this Fall/Winter to save me the headache of digging Annual Bluegrass and its buddies out of my mower deck chute every other pass next Spring?