for the past 2 months I have been feeding my corn snake wild mice. I boil the mouse for 5 minutes long enough to kill any parasite inside the body then when it cools down I feed it to my snake I have been doing this for 2 months now and I have not had a single problems and to add to this SNAKES EAT WILD MICE IN THE WILD they don't have a store where they go to get feeder mice look if you have the means to catch and boil the mice then do it if not breed your own mice I am breeding both feeder mice and wild mice once the wild mice have there baby's they are then taken to a different tank... the baby's should not have any parasites or diseases