Oh that, no worries boger, that's nothing new LOL. That's what basically everyone learns first about indigos haha. I don't find it crazy after cleaning pee and poop smeared all over puppy crates for a million years, and I honestly don't believe it's that huge of a deal. Animals come with cleaning, and it varies across species, however they do it. You can't escape the poops!
LOL, I see! I haven't owned horses, but just seeing the sheer amount of poop always makes me cringe.