I think we have to go at all sides. Young kids are definitely part of the solution. Though by the time they reach teen it often seems any and all interest in t

I think we have to go at all sides. Young kids are definitely part of the solution. Though by the time they reach teen it often seems any and all interest in tidiness has vanished. They'll usually regain it in some years. :) Humans of all ages will be lazy and inconsiderate at times. Accept that as a known and cater accordingly. Fewer and benign materials, decomposing harmless materials and systems that encourage consideration like use of deposits on containers. Require more of retailers, manufacturers and event organisers. Once a few bins overflow and it no longer looks that tidy a lot fewer people will care to dispose carefully, etc...