TheMouse: 9. Wild mice seem to eat just almost anything they find, particularly in the cold and scarcity of winter when they would eat even the most unsuitable food, for example cheese ... ... It comes as a surprise to most that cheese should absolutely not be included in the shopping list for mouse food. A pet mouse has to be fed with great care and knowledge - food which will, after time, lead to its illness and early death includes cheese and other dairy products, acid food like garlic, oranges etc, and peanuts.
correction ... There are different kinds of peanuts; some mousefood products contain such which are suitable for mice.