larroyo33 wrote: Is there some legitimate reason why human and dog poop is strictly regulated, but horse and mule poop have no rules?
I loved field biology and in one class we had to learn to identify animals through many methods, one of which was examination of their droppings. This may not be related to the "why" of the rules, however hominids and canines (usually) are omnivores while equines are herbivores. Horses and mules mainly eat grass and if you examine their scat you will notice that the texture is not all that much changed. The fibrous structure of the grass is not really very much digested and not much nutrient is drawn from it. Dogs and humans on the other hand are usually
fed an unhealthy diet of processed food, from which much nutrient (a lot of which is not so healthy) is drawn. (As predators, we tend to have digestive systems that are pretty efficient in extracting nutrients.) The scat tends to be less fibrous, highly digested, compacted, and contains numerous strains of bacteria, including
Escherichia coli. This bacteria keeps us alive by giving us Vitamin K2 while we give it a home as well as food. We have a number of strains within us, most of which are relatively harmless as long as they remain where they belong. Human babies are born without this necessary symbiotic organism, but it always appears within their large intestines within 40 hours of birth, passed there from the hands of the adults who feed them. No matter how much we wash our hands, we will soon have some of it back on them very shortly. Most strains are not harmful, some are even used as probiotics, but a few can be pathogenic. One person may carry a pathogenic strain and not be affected by it, while another person may become very ill if (s)he becomes infected by that same strain. Other animals carry different strains of
E. coli than we do, while some of them carry related strains of
cholera and
salmonella bacteria. Some of these are pathogenic to us, while some are not. The pathogenic ones, however, can be deadly. Most strains of
E. coli do not survive very long if exposed to sun and oxygen, but a few actually can.
The truth is that unless you sterilize your hands, utensils, and food, etc. to an extreme degree, you are going to introduce a few
E. coli into your mouth every time you take a bite of food. Most of it is harmless and identical to what's already in your gut. If the stuff enters one's body through a different opening, however, that person can become quite ill. (A woman must wipe forward to back.) If a very very few of a pathogenic strain enter through the mouth, it is likely the immune system and stomach acids may be able to kill it. A higher number of pathogenic bacteria will likely cause an infection.
The droppings of mice, rats, and certain birds and reptiles can be quite deadly to humans. If you find mouse droppings, it is best to vacuum them up, wipe with a disinfectant, and dispose of the wipe. It's also dangerous to breathe the dust of such droppings if doing something like cleaning out your attic and overturning boxes.
Equine digestive tract flora tend not to be too dangerous to humans. What's in the organic fertilizer you buy at the hardware or feed store? Horse manure of course; you fertilize your garden with it. In fact, the regular white mushrooms you buy in the grocery store,
Agaricus bispora, are mostly grown solely in that stuff. Ever see the little brown flecs on the bulk mushrooms at the market? Guess what that is? But it's dried out and pretty harmless. The stuff on the trail isn't going to cause a pandemic or an epidemic. It dries out and the bacteria die quickly. The biggest problem would be if the stock animals dumped right in a stream and then a human drank untreated water from nearby. The other animals aren't going to be much affected by it. If we happen to get a lot of it in our systems, however, we might get diarrhea because we have very sensitive digestive systems. Once our ancestors began to cook their food, we didn't need to have the more resilient digestive systems they had and we pretty much became pansies in terms of the microbes we can handle in our gut in contrast to other animals. Most of them are not too much affected by
Giardia lamblia, but Giardiasis isn't fun for most of us.
So, I don't know to what extent the rule makers considered the microbiology of all this. But the truth is, the equine waste doesn't pose too much threat, and the human/dog doesn't either
IF some common sense is used. There are those overused places, however, where the sheer volume of the stuff draws innumerate insects that can transmit all kinds of disease. From the Eagle Falls trailhead at Emerald Bay, ascending the trail above Eagle Lake is one flat to the right of the trail. The soil is duff and almost every square inch has waste and white flecks coming out of the ground. The place is disgusting. The next flat up the trail is bigger and mostly slab granite. The only place to go is in the talus field beyond the flat, but oxygen can get between the pieces of scree and dehydration, decomposition, and death of any pathogens can occur much faster. A lot of people prefer to go in a talus field because the paper can be burned and the remains dehydrate quickly, killing the bacteria. It's true that chipmunks can get to it, but all in all, talus may be one of the best locations to choose.
A side note: freeze dried food is an unhealthy, but usually necessary staple in the pursuit of this passion of ours. There is almost no fiber in it at all. The pastas provide calories for trail energy, but though their fiber is greatly weakened, it's good to include veggies as well. Fiberless food leads to compaction and abnormal colon function. Supplementing meals with large doses of wheat bran can greatly assist digestive health and make the subject of this thread much easier.
On a second and more serious side note, humans eat a lot of unnatural stuff. Grilling food until charred produces a class of chemicals called nitrosamines. These and many other unnatural chemicals in our food damage the DNA in the cells of the large intestine and cause colorectal cancers. It is wise to consult your physician about regular stool tests, sigmoidoscopies, and colonoscopies, based on age and lifestyle. Cancer is an excruciating killer of our species.