I make sure my horse has the opportunity to roll in the sand every single day, no matter what. I hate to see how many horses don't get the chance to do something they love and enjoy so much when they're willing to do so much for us.
Don't get me wrong, I love a clean horse! My horses are generally kept as clean they can be. If anything to me the sand helps more than it hinders, because if she doesn't roll in the sand she's going to get desperate and roll in the dirt or still worse, mud, and that's a lot harder to get out than sand. I like to let my horse roll pretty quickly when they're wet from a bath or sweat because it kinda helps absorb the moisture, then a thorough brushing after they've dried and they're sparkling again. But perhaps it's just too painful for some to actually spend some quality time grooming their horse