People that want horse manure for their garden want it rotted 1 year, so you need to have 2-3 manure piles, so you fill 1 for 6 months, then start the 2nd, fill that for 6 months, then start the 3rd, the 1st one will be ready to give away, then at the end of 6 months start filling the 1st spot again.Thanks for all the useful info. We will have a manure heap, turn it into compost, and post some ads for free horse manure.