Fun topic!
When you ask AI about cavemen, it said:
Archaeological evidence, such as fossilized feces (coprolites), has been found in ancient hearths and other sites, suggesting that waste was sometimes left in or near places where they lived and cooked12. This indicates that while they might have had some basic practices for waste disposal, it wasn’t as organized or hygienic as modern methods.
The point being, of course, is that with modern knowledge we can live a “primitive” lifestyle but do a much better job of it. Quite likely a lot of cavemen poisoned themselves. Maybe, possibly, modern knowledge x hunter and gathering can be a very cruisy way of living.
Or, bury your shit far away, and dig it up for fertiliser after a few years. And pee on fruit trees.