We’ve used the wick applicators in our operation and could not kill Smut Grass. We purchased a GrassWorks Weed Wiper 3 Point Tractor Mount Unit back in 2008 and have had very good success in killing and managing our SmutGrass problem. We let our cattle graze the Smut Grass when it was young and tender, in the early spring, but when the Smut Grass starts getting tough and is still green, we start wiping with the GWWW. We also have been very successful wiping noxious weeds in our perennial peanuts and other hay and pasture fields.