Neighbors Throwing Used Diapers over Fence to My Yard

Call the non-emergency number for Scottsdale Police ###-###-####) and file a report the next time it happens. That is biological waste they are throwing into your yard, way beyond just littering. Totally gross! I'm sorry!

Throw them back or leave them on their porch.

Or, return it to them. Ring the doorbell and say "I'm sorry, you seem to have misplaced this in my yard."

I think I'd do both of what the other two posters posted.

First, take them back over to them.

Then if it continues, call the police.

That is soooooo gross!

Deinitely do something, depnds how gutsy you are! I love the idea of ringing the doorbell and saying I think you misplaced something in my yard!!! They would never do it again if confronted like that! Just don't accuse or be angry at them or they might do it more on purpose!
Then if you have more problems, try and video it and call the cops!

Honestly I am so passive aggressive I would either throw them back over or I would put them in a box or bag and place them on front step.