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No, just a guy who sprayed a lot of it in places where the Truck sprayer couldn't get. Trying to control a bad infestation of creeping yellow buttercup in pastures. I got sick after the second day of working with it. I can't find a thing on how it might affect people using it.
Try spraying between Halloween and Thanksgiving if you get the weather. Clover is somewhat dormant and many of next year's weeds like buttercup, thistle and several others are already up but still very tender and easy to kill.
Well first issue is that you are months late in spraying the buttercup. Spray it either in the fall or very early in the spring. By the time it blooms its done its damage for the year.