Jan 30, 2022 · Unless you have a ramp down to a sunken spot for the bin (so you can dump from the sides into a sunken bin), you have to keep shoveling the manure, after dumping, up to the rim, so you get your money's worth from the $300 haul/compost fee each month. Then you also have to pay for monthly bin rental. When I googled how to compost horse manure