Silica naturally exists in certain foods like banana's, which contain 13.9 mg per 250 grams. It is especially present in oats and lettuce. So if you are putting oats into the mixture you are going to have silica in it. It is not necessarily sand as in sand at the beach. Yes, it is in the same family...but it is completly different.
You mean, if I eat enough bananas, I can crap out my own glass menagerie? Cool.
The ghost of Jack Kevorkian for President's Physician: 2016