[toddmatthews]

its actually 70-90% water. it matters because water is very heavy, and whats left over will be dramatically less after it dries out.

its a large amount of waste, but its not 150lbs of solids

[Isamu]

Yeah cow manure is VERY wet.

Compare to horse manure which is relatively dry, easy to shovel.

[delecti]

The context was shoveling a barn, and you can't leave it until it dries out, can you? I don't know how often you have to clean a barn, or how long it takes for the manure to dry, but my naive assumption would be that it takes too long to dry for how often you need to shovel.

[WorkerBee28474]

You assumption is correct. It is scraped out while still wet.

Tangentially, that can be a job for robots: https://www.youtube.com/watch?v=pz4t0qIISTs