I start my dogs' walk by giving them time to do any business they want in MY yard. Then we walk.
My neighbor on the corner (five houses down) was working in her yard one day when I was walking my two dogs . . . and of course, one decided to hop up on the curb and poop in her yard, about a foot from the curb. I carry plastic bags, scooped the poop (you would never have known the dog had been there), and continued.
The very next day, she had one of those "NO!" signs stuck in her yard, right on the corner.
I can understand not wanting a dog to poop in your yard, but I don't have complete control over it.
What angers me is that her family has owned TWO outdoor cats for the 20+ years they've lived there, leaving the garage door open about a foot, with food and water inside.
The cats roam the neighborhood, obviously pooping where they please, and leaving dead birds where they please. I fail to see how her letting her cats poop in other people's yards - and not picking it up - is no problem, while my dogs occasionally pooping on her grass and me picking it up is such a problem.