You mow a lawn you have had for years. First mow of the season so there is a little leaf cleanup along the fence. You blow along the fence-line, being careful not to spread the leaves too much, out into the yard so the mower can turn them to dust. You finish up, get the equipment loaded up and you notice a small wrinkled lady in a blue house coat standing on the neighbors' deck. She call's me over. I knew it was a pita by the look of scorn she had on her face. Never met the lady before. She began ranting about how we blew a few leaves through the fence onto her yard. I asked what she wanted (trying to be diplomatic) and she wanted me to blow those leaves, which incidentally came from her own raggedy trees, back through the fence. I thought about it and just said ok and walked to the back of her yard with the blower. 6 inches of leaves covered her back yard. I simply walked along the fence with the blower on idle and let any loose leaves go through the fence. if they were small enough, they went through chain link. Told the lady that if she could point out which leaves blew through, I would gladly remove them. I also told her that I won't clean her yard for free just because a couple of leaves may have come through the fence. Did I do that right? I mow that yard weekly.