Look for cages at pet stores, online, or at second-hand shops. A 20" long glass aquarium with a mesh lid also works for a group of three female mice. Do note that glass tanks need to be cleaned more often, as the mice can otherwise develop respiratory issues.
For example, if you have 4 mice, you’ll need a cage that’s at least 2 1⁄2 cu ft (0. 071 m3) in size. If you have male and female mice that you don’t intend to breed, put them in separate cages.
Avoid buying a cage made of wood, since urine will soak into it before you can clean it.
For example, instead of setting the cage in front of a window that gets direct sunlight, place it against the wall that’s perpendicular to the window.
For example, don’t put the cage against a wall that’s shared with a loud washing machine or dryer. These can vibrate the cage and make noises that irritate the mice.
For example, rooms like an air-conditioned office or a small bathroom aren’t good for the cage since these rooms can become too dry or too humid for the mice.
Use a variety of materials so the mice can choose what they want to build their nests with.
If you choose to use aspen shavings, ensure that the shavings are made from toxic-free wood.
While you can set a water bowl in the cage, some mice like to throw bedding into it, so you may need to change the water frequently. Water bowls may work for elderly mice, however, many mice will just dirty them, and it may be possible for mice to drown in them, so try to avoid water bowls as much as possible.
You may see the mice remove some of the food from the bowl and hide it in the bedding. This is normal behavior.
Mice need to have at least two houses per mouse in case one mouse decides to become territorial, or a house becomes damaged. [12] X Research source
Paper towel or toilet paper tubes Hemp rope toys Plain wooden craft sticks Wood from a fruit tree, such as apple or cherry Hanging toys or ladders
