I bought this product after long and extensive research regarding what broad lead herbicide I could safely put down on my active pasture. Two components of this product I really like is that you do not have to pull horses off unless you have broodmares about to or with foal. The second item is that manure and/or compost from horses grazing on treated pasture can be used for flower or vegetable gardens without residual damage. Alsike clover was my target with this application. It took a while to be affected. Broadleaf weeds, like plantain, were the first to take the hit. I'm happy with this product so far and will see how my pastures look come next summer.
I bought Weedmaster to specifically kill off a two acre pasture of milkweed, as well as other weeds. I sprayed the entire pasture - after about 10 days I mowed the field. After another 10 days we finally got a good rain, and overnight the milkweed are already several inches taller than the surrounding grasses. Too early to tell how the Weedmaster did on the other weeds.