Thank you for your response! The store I got it from is a local business and not a chain shop. To be honest, the owner of the store does not have the best practices and the reptiles for sale are not kept in good conditions in my opinion. The only reason I have gone there is because I was recommended the place due to its location. It is the only reptile store anywhere near I live, the next closest being several cities away. I have looked into ordering substrate online, but the shipping cost is more than the substrate itself. I don't intend to buy from this place again and will likely just eat the cost to ship from now on as I'd rather be safe than sorry.
This all being said, I already have the substrate. Would it be best to just return and reorder online? I do not think the owner will take it but if that's the better choice than I will try.