I lost a spray tip from the boom mounted on the back of my mower a couple of months ago and had to wait till the grass started to die in the area it fell off before I could locate it. I walked for 30 minutes looking for it the day it came off with no luck. The chemical left in the boom made a figure 8 pattern in my lawn. I hung it on a rod I was using to brace a small tree while turning lol. Grass has only recently recovered.
Haha that sucks!