Yes we folks on the Hillside do make use of the parks up here in our backyards.  We are also constantly out picking up trash and dog shit that is left by others in our backyard everyday!!!   Keeping it clean since we live here and have to look at it everyday as we drive home.-- We pay plenty of taxes to live here!!
How about we add a charge to Mc Donald's, Burger King, and other fast food places as well since everyone seems to think its ok to dump their fast food wrappers in our backyards!!