You buy a drink at a convenience store, step outside, and start looking for a trash bin. A minute passes. Then five. Still nothing. And yet the street is strangely clean.A survey of international visitors to Japan found that the scarcity of public trash bins was one of the most common frustrations during their tripIn some surveys, it ranked as the single biggest difficulty travelers experienced in Japan. If you have ever walked around Tokyo or Kyoto holding an empty bottle and wondering, “Where am I supposed to throw this away?” — you are not alone.Trash bins are rare in ...