It may be hearsay, I'm having trouble tracking down the source, but I remember a tumblr user who's snake died shortly after a feeding and when they did a necropsy there was a microchip found in the snake's stomach contents. The user was incredibly distraught (understandable) and said they'd gotten their feeders from Rodent Pro. Regardless, there are MULTIPLE anecdotes to be found about regurge, diarrhea and death horror stories all over the internet from owners who fed their snakes and lizards with RP stock. Not a good track record and not something I'm willing to risk when there's several better options available.