I havent used Clethodim but 2 products just like it that kills only grasses in a plot. What are you wondering about? My best advise is to read the label on the container first and foremost.
Just wanted to see what you thought about it. I just placed the order and was looking for advice for when time comes.
The stuff works good, takes a little time as it isnt like round up where you spray and a week later things are turning color. Lot depends on how actively growing the grasses are too. I spray for grasses in my clover plot before the first time I mow it. Like when I mow my lawn at home for the first time I will get out there and spray my plot, and then spray it once late summer. Go over to qdma.com and search their food plot forum. Lots of good info/posts pertaining to Clethodim.