Here is something I am doing. This is not addressing getting rid of Dandelion, but maybe your need to do so. I live in an Urban environment and have been turning my front yard into a jungle like food growing system (code for not very neat and row like or manicured:). But facing the street, I have a hedge of Bird of Paradise, large agaves. lions tail and some other pretty and/or unusual
trees such as Buddha's hand. This I keep pretty neat looking. My point is that the eye of people walking by is drawn to the pretty front and it somehow makes it okay what they see behind. So far, I have gotten lots of positive
feed back and got to meet many neighbors. As we go along, I am planning on growing more edibles along the front line and invite people to help themselves - that
should create more friends for what I am doing.
Also, the hedge serves the double purpose of catching pollutants from the street, protecting my edibles from this unwanted input.