I know from years of trial and error that some chemicals work better some years than others. For example, I used to use a capful of dismiss with 3-way in our backpack sprayers and it for a few rounds was the absolute cure-all but the same time the next year wasn't as effective. My question is this; What are any members in the transition zone using for Bermuda and Zoysia lawns that is highly effective on weeds without damaging the turf? I spot spray every lawn with a 4 gallon tank. Thanks for your time.