They like to eat any seeds like bird seeds and seeds to grow plants and all of those types of seeds I didn't mention in this ANSWER
Wild mice like bologna.
Crush mice food or mice pellets
sometimes they eat cheese but they are mostly preferred to eat peanut butter and bacon. Wild mice do eat allot of things but if these wild mice are babies they wont eat the cheese they will feed of their mums milk
grass
mice love dandelion leaves and heads! but make sure they get them at most only once a week and aren't poisoned by exhaust fumes (near a road) or pesticides
grasshoppers
well, nearly everything, even other mice will eat mice! but mice will also eat bugs in the wild so, they do have prey, and they do have predators!
radishes
Sure it is. They eat them in the wild and much more.
They eat this rodents because it is their food. If they don't eat these, then how will they live?
They eat seeds & grains, along witth fruits, insects & small lizards. Some even eat frogs & tadpoles too. You can just do an internet search of 'wild mouse foods' or 'diets of wild mice'.
Some animals that eat mice include snakes, owls, cats, and foxes. They are natural predators of mice and help control their population in the wild.