Plus I got to work with some absolutely terrifying herbicides in my greenhouse days. We had one butthead who didn't believe the proper mix was one drop per 55 gallons of water. (Made in 2000 gallon batchs usually. Achieves satisfatory results within three days with minimal regrowth. Often used as a pretreatment for future parking lots and roadways.) He wanted just enough to clear a 80 foot by ten foot area between greenhouses that was going to be regravelled and didn't want to do the math. Some obnoxious, like mint. It was coming under the greenhouse's foundation and invading them as well
There was a major session of "What the *heck* did you do!" when the guys work was checked a few hours later and all the top growth in the sprayed area had literally liquified. He exceeded the labelling directions a wee bit. (And was too high up the food chain for me to really impress with my displeasure. One of the drawbacks of working for a large privately owned company. Lower level workers with pull.) Probably still barren to this day.