In many parts of the city, dog waste bags make up a significant portion of street trash. It would be wonderful if there was a way to compost or otherwise remove

In many parts of the city, dog waste bags make up a significant portion of street trash. It would be wonderful if there was a way to compost or otherwise remove dog crap from the landfill. I remember reading the book "Ghost Map" (great book, BTW) and it said that Victorian London had "pure collectors" who collected dog waste and sold it to tanneries, but apparently that's not a resource stream anymore. :-D