i do have an honest question for gramps...
why do you assume other have the same problem as you?
FoxyWench, when I made my initial post, I wasn't real sure how I felt about horse manure on the "multi-use" path - I just felt it was kind of strange that there were signs saying folks had to clean up after their dogs, but no requirements for horse riders to do the same - especially since in the 4 mile walk I saw only 1 pile of uncollected dog poop and over a dozen piles of horse manure (keep in mind we were on the "shared" portion of the path for only a mile and half or so).
As I read the posts in the thread, and did some research on the Internet, I came to several conclusions.
First, on horse-only trails and areas, horse droppings are normal and expected. On multi-use trails, horse droppings are considered to something that reduces non-horse riders' enjoyment of the trails. If I had to give just one reason why I feel that way, I'd say it is because the Horse Rider's Etiquette Guide (endorsed by all kinds of "horse friendly" groups) says that riders should kick the manure off of multi-use trails. The guidelines make absolutely no mention of dealing with manure on horse-only trails.
Second, a Google search for horse dropping complaints turns up a raft of web sites that talk about park districts, municipalities and other places with multi-use trails getting complaints about horse manure on multi-use trails. So the direct answer to your question is that I don't assume other folks have a problem with manure left on multi-use trails - the Internet has a bunch of reports of people complaining and of horses being banned from multi-use trails.
The third conclusion I reached, based solely on the responses to my posts here, is that a lot of folks who ride horses in multi-use areas have an "if you don't like to see horse poop on a multi-use trail, tough luck - go elsewhere or shut up" attitude, which comes through loud and clear as they provide a list of reasons why they can't or won't or shouldn't be responsible for cleaning up manure their horses leave on multi-use trails.
The State of Colorado did a trail usage survey and determined that 4% of their statewide trail usage was by folks riding horses. I don't imagine the percentage is much higher anywhere else in the country, but even if some places have double that usage, you're still talking only 8% of the trail usage is by horse riders.
That means that well over 90% of the people using trails are not horse riders. So when those folks start complaining about horse manure on the trails (whether it is justified or not), what's going to happen?
It is unfortunate, but the vast majority of folks won't take the time to do any research or try to see the other side of the story. How many of the riders reading this thread knew that a fair number of horse-related organizations endorse a set of guidelines that clearly state riders should kick their horse's manure off a multi-use trail? And how many of the non-riders reading this thread knew that while the EPA considers horse manure to be a solid waste, the manure is so benign that they don't regulate it?
Quite frankly, if my park district had a public meeting where folks could discuss the "problem" of horse manure on the trails, I'd attend the meeting, say that I thought the horse riders should be allowed to continue using the multi-use paths, and suggest the county set up a system where folks who used the trail could get together every week and spend a few hours cleaning things up - riders and non-riders alike.
While I could make a very good case for the benefits of such a system, I'm afraid that suggestion would get voted down and, just like my neighbor the pig farmer got kicked out of his land and dogs in my area have been kicked out of some really nice green spaces, it would be "bye-bye horses."
I don't know when it is going to happen, but I am convinced that if the horse riders in my area don't find a way to clean horse droppings from the multi-use paths, the folks who walk, run, and bicycle on those multi-use paths are going to complain to the park board about the mess the horses leave on the trails.
If horse riders are proactive and find a way to keep the multi-use paths clean, they'll be able to share the paths with other users for years to come.
I suspect a bunch or riders here will disagree with my conclusions, and that is their prerogative. After all, they have much more at stake them I do, since I'm not one of the folks who rides horses in multi-use areas.
Have a GREAT day!
Rob