Hello everyone. Just had a question about some calcium without D3. I just bought a huge tub of it on Amazon. The Zoo Med Reptile Calcium Without Vitamin D3, 48 oz to be exact. When I got the order, the expiration date on the tub was 08/10? I asked amazon about this and they said I could discard it and they will issue a refund. I guess I just question, is it really outdated? Would I be ok to use it? Is the shelve life a little longer than the date listed? It was a super good deal and I would hate to have it go to waste... Thoughts?