The 4th edition is a completely revised, expanded, and updated version of what has become an underground classic bestseller. The author draws from 40 years of research, experience, and travel, to expand and clarify your knowledge and understanding of... your poop!

Not only does the book address what to do with human turds, but it is also a priceless manual for anyone involved in composting or gardening, or looking for basic survival skills. There is no other book like this in print!