Artic mice is known for being low quality. I have opened packages that smell god awful, that have bruised or discolored looking feeders, etc. Even if the facility is clean and tidy, and their packaging is spot on, there is absolutely no quality control between when they ship them out to store and when you purchase them. They're also several times more expensive than locally raised or even the direct shipped feeders like the ones you get from Big Cheese or Layne Labs. Poor quality product for way too much money.