When was compost invented?

Thousands and millions of years is the length of time that compost piles have been around. Thousands of years represent the time-span of accidental and deliberate human participation, as cave dwellers and as early agriculturalists, in composting. Millions of years stands for the composting incidental to animals excreting or regurgitating organic animal and plant matter into species-specific latrines and vomitoria.