I can totally understand why you are frustrated, I can’t imagine that anyone wants dog poop in a bag in their dust bin.
But please dont think badly of all dog owners. We have a dog and wouldn’t dream of putting the poop, double wrapped or otherwise, in a bin, or left hanging from a tree or similar.
In the same way that there is a small percentage of ALL groups of people who are entitled, eg some car drivers, joggers, cyclists, people with buggies, dog owners or walkers, and sadly the rest of us all suffer by association.
BUT it seems to me that there are far fewer designated dog poop bins around now. I’ve sometimes needed to double or treble wrap our dogs poop and put it in a special waterproof side pocket of my ‘doggy’ bag and take it home to throw in our dustbin. Our dog is an absolute joy, but sometimes I really wish he could learn to use a proper loo. I’ve seen videos of cats using loos, but never a dog!
Do hope that you get a good resolution to your problem. 🌺