I used a Grassworks weed wiper for the first time in 2019. I had a farm that was covered with pigweeds that we hand-pulled three times and used the weed wiper twice towards the end. The weeds were relentless in our efforts to remove them until we used the weed wiper. I was amazed at how well it burnt the weeds. The weed wiper is a great investment for high weed pressure fields.