Please Help! Can you save thawed mice???

I thawed out three fuzzies for my corn snake last night. He eats three fuzzies every Friday or Saturday like clock work even if he about to shed. I put the thawed mice in the fridge...can I still use them and try to feed my snake again tomorrow or is it once they are thawed then they are no good, or since I have them in the frige is it OK to use them. I don't want to make my snake ill? Thanks for your help.