I have 20.3 x 10.6 (10 gal) tank. I have 2 mice and i think the cage is to small for them (i have a critter trail) and i wanted to know if I can keep them in an aquarium. and if i do will the tank stink? because i just cleaned the cage and it already stinks. So will it be the same with the tank?
i also want to know if you can train mice to use a litter box to reduce the smell?

You can keep mice in a tank, provided it is big enough, you use safe beding, and you provide plenty of suitable toys so they can climb and exercise.

A 10 gal is too small in my opinion – you want at least a 20 gal, preferably bigger. A 10 gal is barely big enough for a basic house and wheel, and will get smelly very quickly.

Make sure to use safe bedding, NOT cedar or pine. Paper beddings like Carefresh or Megazorb are best for mice. This is eve more important in enclosed type cages such as tanks, because of the poor ventilation.

Personally I’m not a fan of tanks anyway, as they are heavy, difficult to clean and do tend to smell worse than cages because of the ammonia build up. Maybe you could get a large hamster or rat cage instead – these are suitable for adult mice provided the bar spaceing is 9mm or less.

Check out this site for the best mouse info – they also have some great pictures of different cage and tank set ups in the forum to give you ideas. http://www.allaboutmice.co.uk/