ArthroFlex 5 pounds (120 day supply)

I have been using this product for over 10 years for my dogs. I purchased a 5 pound bag from the vet's office - I found a large dried corn kernel as well as pieces of wood chips. I returned the bag to the vet's office; I was given another 5 pound bag. I was hoping the new bag was a fluke and took the bag home to give to me dogs. Unfortunately, I found more wood chips and other pieces of who knows what. I attempted to email the company from the company's website - the email bounced back as undeliverable. I called the toll free number listed both on the bag and on the site - it was a recording that would not accept messages. Please do not give to your dogs - there are probably items shredded to look like the product.