All of a sudden, I am getting emails about recycling shoes from a post I did several years ago! I just found out that New Balance does not take back shoes any more and I had a phone call from a guy who recycles shoes, takes them to TiaJuana for reuse, but he has 2,000 soles that they wouldn’t take and called to ask me what to do! I don’t know.
That said the problems will be eliminated if everyone just wore a biodegradable shoe. Although not available yet in the US, the Oat Shoes, when you are done with them, just bury them in the back yard