Years ago a neighbor, who had an indoor cat, would open his front door to let air in through the screen door. I had a naughty cat who would tear a hole in my screened porch to frolic outside. My neighbor complained about my cat using his yard as a toilet. I guess my kitty was marking his territory to show the neighbor cat. My county has a pet leash law and the neighbor threatened to report my cat.

I patched my damaged screen and bought a cat leash. Problem solved, or so I thought. Each afternoon I would sit reading in my yard with kitty on leash to run through the grass and chase flies.

One day a plastic grocery bag sailed over the fence into my yard. I looked at it, it was used cat litter, I put it in the trash. Days later another bag was received and then another. So I took the presents and hung them on my tree in view of their back door. And the bags stayed there for several weeks. I got no more presents.