I am curious if the stuff that you seen was the product I deal in or if it is a new product I have never seen.I am always looking to find new products to experiment with I make Infield mix and something we sell under the name Stabilized D.G.This product is blended with the DG and then watered and it becomes very hard,depending on the mix and the amount of stabilizer used..This stuff can get as hard as concrete.I am still looking for more products that I can promote out here in souhtern california to many of my landscape customers and home owners.Get back to me,maybe we can exchange ideas or knowledge on products..