We have a lot of land, so we're fortunate enough to be able to spread it over one of the pastures in the woods that isn't used. Without this option, many people start a manure pile and pay someone to haul it away every so often. Another option that may or may not be available in your area is a Dumpster.
We live on 6 acres, but most is not suitable for horses. It's quite steep, so I have done the big pile at the corner of the paddock.
I have been hauling the poop over to the corner and my neighbor asked if he could haul some out for his garden. He took 1/2 the pile!
That makes me think I might start offering it up to all of the people we know who have gardens! We use it all the time in our garden, along with our chicken poop. It is a cheap way to get rid of the poop and be a good neighbor.
We spread it over the land that doesn't have horses on it, you could always offer it as fertilizer on places like Craigslist, I see ads for it all the time and it goes fast! (most people offer it for free just an FYI) Posted via Mobile Device
We pile it up right behind the horse dry lots and in front of the pasture. People haul it away for gardens r we push it over the hill into the wetlands/lowlands that are on the property to make more higher land.
We have six horses - that's a lot of manure! We put it on the garden until it just won't hold any more, then pile it up beside it for future use. I also have a bathtub that I plant herbs in during the spring and summer. I use nearly straight horse manure - it's great for growing plants - provides them lots of nutrients and isn't "hot" enough to burn them like chicken manure.
We take the chicken manure from the coop and put it in the pile next to the garden, too. After a while we put the pile on the garden and turn it in.