Possibly only it's mother's milk is satisfactory. Formula for human babies may be better than milk from cows. Odds are you have nothing in your house that is satisfactory food, except water. Possibly you can phone or Email the pet store and get some suggestions, but few people know the dietary needs of week old mice. My wife says, dilute cow's milk with water, as a temporary measure. An eye dropper may work to get the mouse drink, or a nursing bottle for a doll baby.
kill it with a large hardback book!!! wham!!! wham!!! wham!!! wham!!!
We have a little baby mouse, it seems to be about 2-3 weeks old. Its mother died and we have no way to go to a petstore for another few hours. Will any human milk be acceptable?