You really have to read AnnaMM post. This is her thread, not your therapy couch.
I think #1 could be skipped in honor of #2.
I think Bentonite does a great job of sealing dams. And DE is great filter material. Letās let them both do what they do best.
Per the vetā¦lunging at a jog trot gently bounces the gut, and the sand that has accumulated is mixed with the gut contents (digesting hay/feed) and much of it becomes re-suspended and can then be secreted. The exercise also aides motility, a good thing as the vet suspected (but as yet had no proof) that some horses with chronic sand issues might have slower than average motility.
Eliminating as many sources of sand as one can will lessen future issues but wonāt address sand already present in the gutā¦