GrassWorks Manufacturing is America’s Largest Manufacturer and World-Leading Innovator of Rotating Weed Wipers. GrassWorks Weed Wipers and GrassWorks Hydraulic Hay Bale Handler are just two of the many products that GrassWorks Manufacturing builds. GrassWorks Manufacturing, LLC and employees have over 40 years of combined experience in the farming and manufacturing industry. Our farming experience ranges from commercial hay and grazing operations to truck farming, which provides us with many years of “on-the-farm” knowledge of financing, marketing, and harvesting crops, animals and produce – all through hard work. Using the GrassWorks Weed Wiper, University of Nebraska has successfully killed Palmer and Kochia with no damage to the crop.