my daughter has pet mice 2 .i spend about 5-10 dollars a month.on food and bedding,it is cheaper at wal-mart .the bedding is about 2-3 dollars and the food is about 5 for the whole month.she changes the bedding every 2-3 days .just anuff to cover the bottom and she fills the food bowl every other day.fills water bottle as often as needed.you can feed them some things you eat.like cherrios,sunflowerseeds….etc,,,,,,,,,,,,,,,,