Keep 1 male and 2 or 3 females in a small aquarium. (2.5 to 5 gallon is fine, but some use 10 gallons)
Feed and water everyday. Use pine shavings and change the bedding (wash the tank, bowl and waterbottle) every three days. Your oder will be nil.
A tip: Place the food dish in the middle of the tank. Mice use the corners of the tank for bodily waste.
Hope that helps. I have 15 breeding tanks in the reptile room. Each has 1 male and 3 females and I have no oder on day one, on day two you can only smell the mice is you put your face in the tanks, on day three you can start to smell the mice if you put your face near the mice shelves, which is why day three is changing day.
Rick
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