I have an OLD chicken coop on my property that hasn't held chickens for at least fifteen years. It probably has two feet of straw and droppings in the floor. Did I strike gold for my garden (or maybe too old to have value) or is there some reason I shouldn't use it? It's been covered from the rain and is very dry and just smells dusty.
I'd take a wheelbarrow full and get it wet and wait 5 days to see if it heats up. If so, it's probably too hot to put right on the garden.
Regardless, I'd spread it around any trees/shrubs you want as a fertilizing mulch. If it doesn't cook when you get it wet, you could put it in your garden as well.
At least that's my thinking...
"Hundreds of years from now it will not matter what my bank account was, the sort of house I lived in or the type of car I drove... But the world may be different because I did something so bafflingly crazy that it becomes a tourist destination"
Yes, my master! Here is the tiny ad you asked for: