Sheep & goats are only a good idea if you sit in an office building all day, or drive by the field where they have been.
Woe be unto he who actually wants to walk in that field.
We lived near a few acres of land the city bought for no discernible purpose, but that is what cities do, and is another story.
Anyway, for the first 15 years we lived there, they would mow the field once or twice a year, and the field was used by numerous nearby residents. We could take or labs out there & they would spend hours running after whatever we threw for them. The local kids flew kites, played frisbee, and whatever.
The someone got the bright idea of using goats to mow the field, and all citizen usage stopped.
Whatever a goat eats is promptly returned in the form of goat dung, which is small little round goatberries. After the goats had been there, the field was literally carpeted with a 1-2” layer of goatberries. These would smell for a while and then dry out in the summer heat. It was like walking on a layer of marbles. Disgusting little marbles.
The kids stayed away, we stayed away, not one went there any more.
The goatberries would stay until the winter rains came, when the water would reconstitute them as a layer of mushy goat dung.
Essentially a neighborhood asset became a manure pit. But the powers in charge drove by & thought it was “ecologically sound”.
I have been outdoor-oriented all my life and have never seen a natural occurrence of several inches of animal dung 1-2” thick spread over several acres.
If there was that much poop, there were too many animals left on the land too long. And they should have used sheepies instead of goats. Goats are more browsers. They'd be excellent for flash grazing (overstocking but moving away after, say, 48 hours, 72 max) an area with weeds and a little woody stuff coming in. But sheep would crop the grass nicely if managed correctly.
People would often ask about the advisability of buying sheep to keep their lawns down. They're overlooking the way grass grows. In the east, if you have enough sheep to stay ahead of the grass in the Spring, you have way too many for the rest of the summer.
The only way you can get an inch of goat crap is to confine them to a small area and truck in food for an extended period of time. Properly used, goat and sheep pasture stays clean and has no odor. Even cattle pasture is not messy after the initial pies dry out. If you just turn any animal into an area of natural growth, they will eat it all and starve to death long before they carpet it with manure.