Once, while on an FTX in the Army I got tired of cigarette butts everywhere. After they were all picked up, I told the smokers not to be caught throwing a butt on the ground.
The next day, someone did it again.
I had this guy dig a hole, 6 x 6 x 6 and bury his cigarette butt. After he had filled the hole back in, and made the ground look undisturbed, I came to my senses.
"you know, that's still littering if it's not in a trash can. Dig your cigarette back up and throw it away. Then fill the hole in and leave the ground looking undisturbed"
.... Solved that problem
Litterbugs in general are really just shitty people. Eating in your car... Ok, I get it, you're in a hurry. But take the trash with you once you get to your destination. Is it that hard? Damn it's not that inconvenient for me to keep a plastic grocery bag to keep water bottles / coffee cups until I fill up on gas and throw the bag away there at the pump.
Feet? How long did it take him?