Cat toilet training multiple cats may also be a problem as the cats may not all work at the same speed in the steps
. It is also hard to figure out which cat is not adjusting. You have to be able to keep tabs on all the cats so you who is doing what although it can be done, it just maybe more difficult. If cat toilet training is something you think you would like to try, check out a book or look up the video's and get started. It has been done for years and there is a lot of material available to help you get started.