The first few comments have pointed out why cow manure is a lower disease risk, and why it is ideal for most crops, but human manure is usable with treatment. Your local hardware store probably sells [Milorganite](https://www.lowes.com/pd/Milorganite-Milorganite-32-lb-Bag/1000822132) Which is Milwaukee Organic Nitrogen- it is highly treated sewage solids make by the Milwaukee municipal sewage system, [people in the lawn care subreddit love it](https://www.reddit.com/r/lawncare/comments/ubzzqs/when_you_see_your_neighbor_unloading_like_15_bags/)
[Urine is fertilizer too.](https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/feeding-plants-with-urine.htm) The elements of life move in a flawless cycle. There is no waste in nature, resources are 100% recycled.
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