You can use water bowls, but you will have to clean it all the time, they will put bedding in, food in, use it as a toilet etc. I have a dwarf hamster in a little critter cage, I duct taped a 3 ounce water bottle to the side lol! He was given to me because he was too aggressive for the petshop to sell. My kids tamed him in 10 mins lol!