I want to use beach sand any body used it, somebody told me that after collecting what you need is to take a big bottle of vinegar and mix it into about just enough water to cover the sand. When it starts to fizz mix it well. After about 5 minutes pour out the sand and rinse it well. The vinegar will dissolve the sand's outer layer and give it a really good cleaning. After rinsing almost anything that was on it will pretty much be gone.