A study in a Canadian Journal. Here's the bit that says what you say miss tray...but hey, if contamination is an issue...
The study also revealed that the bully sticks can harbor harmful bacteria. Researchers said that many dog owners are unaware that the treats are made from raw meat and should be handled accordingly.
The group sampled 26 bully sticks purchased from retailers in the United States and Canada and made by different manufacturers. They found one tainted with Clostridium difficile, a bacteria that can cause gastrointestinal illness. Another had traces of methicillin-resistant Staphyloccocus aureus, or MRSA, and another had an antibiotic-resistant strain of E. coli.
The number of treats sampled was small and not all of these bacterial strains have been shown to infect humans. However, the researchers advise all pet owners to wash their hands after touching such treats.
The team advised dog owners to observe the same sanitary practices they would with raw meat when handling bully sticks. Dog owners should thoroughly wash their hands with soap and warm water after touching the treats and children, pregnant women, the elderly and people with compromised immune systems should avoid handling them.
- See more at: http://www.dogheirs.com/dogheirs/pos....85kkjF6r.dpuf