I’m lucky to board at a place that has fast-draining soil and the barn owner is a leading site work contractor who keeps the arena, driveway, trails, pastures, and areas around the barn in really good condition. There is no problem getting sand, dirt, gravel, etc. any time. Plus, my horse is now comfortable around heavy equipment, LOL.
I do the same thing with the Unbeetable! It doesn’t look very appetizing when un-pelleted, but horse seems to enjoy it! LOL
ETA: It’s self-care board. I take care of the horse, the owner and manager (both great guys) take care of the farm. It’s perfect!