Has anyone ever wondered if there is a way to spray under your mower deck with a herbicide to keep from transfering a weed from one lawn to another? I saw a man spraying something under his mower deck when I was out walking my dog. I walked past and decided to go back and ask. I thought he might have been putting a nonstick spray on. He said he was spraying a weed killer under there because he didnt want to spread the seed fromm weeds in that lawn to another lawn he had to cut down the road. My question is ..... Do they make a spray for that and is that a legal use of a pesticide.