Join Date: Feb 2012
Location: The land of Enchantment
If my mare has "clean dirt" packed in her feet, I leave it. I believe it does provide structural support. But, my mare will avoid stepping in poop, my filly looks for it and steps in it, I have to believe - since their area is kept pretty darn clean. So, I just clean her feet regardless b/c it most likely isn't all "clean dirt" in there.
When I have had my horses on pasture, their feet seemed to stay relatively "clean", unless it rained. So, I guess they were designed to pack dirt where dirt would pack. ;)
There is just as much horse sense as ever, but the horses have most of it.