yes they can. they will only pee in it .
put a litter dish in the spots they pee, when you the liter in it, put some soiled litter in it so they know what it is, and make sure youu take the litter out of the bottom of the cage.
leave the litter pans there for awhile, and after he gets used to it, take one pan out if you have more than one.
then when you are down to one, and if you want to move it, move it very slowly or he will start to pee on the floor again [from personal experience]. just move it alittle each week until u get it where you want it to go.
hope that made sense, i'm not that great at explaining.
summer