I received a letter a week later and have simply been so busy that I haven't shared the news. Here's the response:
The good news, however, is that the company seemed open to my inquiry about changing the packaging. I'm looking forward to seeing how they respond a second time after they receive my response to their request for product details (i.e., UPC Bar Code and lot numbers).
P.S. It's Halloween. Did you know that some dentists are offering to buy back Halloween candy for $1 per pound? The candy is sent to our overseas military, along with toothbrushes and toothpaste.
Today, I managed to find a non-candy option, in recycled cardboard: