What's to stop me from going to Robert Moses, grabbing sand, brining it back home. A rinse in a mild bleach suction followed by a thorough rinse if fresh clean water. Spread on sheet plastic and dry in the sun. Suntan lotion? EColi? Those are a little hard to buy into lol. I someone could give a better reason other than the 2 mentioned above or "don't do it" it would be helpful.
I could be wrong but I think our local sand is silica and it does not have the buffering ability of aragonite sand