anyone used any katana? Rep said that a late applicaion(maybe the last round) would help prevent some sedges the following season. This also seems to be a complete product that will get grasses, sedges, and some broadleafs. Wonder the cost vs. a celcius/halosulfuron mix. Would need a separate spray for st aug and fescue. What about warm temps? Any reviews? Would be great early season app for overseeded bermuda also.