I saw this thread over on LinkedIn, and I am curious what my fellow Barnmousers think? (http://goo.gl/8fX7O)

In our covered round pen (even being only moderately used right now in the Winter) we have a dust problem. Just walking through it kicks up enough dust to cause problems for our two elderly Paso Finos who take shelter there when the weather gets crummy. Hosing it down is not really an option right now as it is their shelter from mud, so they need a dry place to stand. What are your thoughts and suggestions?