When I lived in my old house, I had a guy knock on my door and ask if he could mow my lawn, and quoted a price. It needed to be done, and we were having a stretch of very hot weather, so I said yes. He mowed my lawn, and honestly did a very good job. I did cringe a bit when I saw him with a cigarette in his mouth while pushing my gas-powered mower. :smack: Never saw him again.
I also had a woman knock on my door after a snowstorm and offer to shovel my sidewalk because she said she needed money to buy diapers. I had some diapers that I was going to donate to a food pantry, and they happened to be the size she needed, so she shoveled my driveway too. 