you have been lucky.... lots of animals have gotten sick or died because of these
† So far, there has been no specific substance or toxin identified in Chinese treats that kills dogs, but this has been reported enough that I take is seriously. I used to get these from Costco, but I stopped buying dog treats that aren't made in the USA.
These are the most scrutinized and tested pet food in the world so I trust their safety. Plus†less than 1% of the world's dog population have gotten sick, which means the culprit is most likely an allergic reaction.... kinda like humans who are allergic to peanuts. Doesn't mean peanuts are poison and should be banned, does it?
I just bought 10 more bags. I may buy more and donate them to local pet rescues.† †