If it's absolutely not on the label I'd limit yearly applications to 2 or 3 at the most. Any more than that would seem to be excessive, and would indicate that 2,4dB obviously isn't working for the kind of weeds that you are trying to kill. I'd strongly advise you to check out using Thunder herbicide at 4 oz per acre available Daniel's farm store for $189 a gallon. This product sounds pricey, but is actually cheaper per acre, replaces both Clethodim and Butyrac 200 so you only make one pass for all of your weeds. Thunder herbicide has a residual effect and will clean up tough weeds that your other herbicide won't, and you will be amazed by how clean your clover looks. Spray when the weeds are 3" high or mow before spraying.Hi Guys, my first attempt at perennial Durana clover is doing well, 8 inches tall in most places. It started doing good in December then really took off in January. The grasses that were there Oct.1 were still there Feb. 1, they didn't die over this very mild winter. I hit it with clethodim 8 oz per acre Feb 1 and March 1. It did pretty good on the grasses in spots but didn't kill it all. Question: The clethodim label says "max 16 oz per acre per season per year" which I am already at 16 oz.. Does anyone know can I hit it again without damage to clover?. On the broadleaf side I sprayed Butyrac 1.5 quarts per acre Feb 8 . It did kill a good bit of the broadleafs but now I see the weed in photo below coming in kinda strong. Also a few other broadleafs coming up. I can't seem to find maximum times per year I can hit clover with Butyrac on the label??. Any info on how often and max per year ya'll spray Clethodim and Butyrac would be much appreciated.