No, NO NO NONONONONO!

worms, fleas and any other creepy crawlies that you don't know about.....

Maybe they've eaten some Decon somewhere and just haven't gotten sick and died yet.

Do U really want to give your snake prey you don't know?????? In the wild it would be different, because they'd have a better tolerance for the icky stuff, but after being pets, why subject them to that possibility and maybe end up at the vet's?

Safer to just whack the field mice and compost them in your garden or send 'em to the landfill.