Justin and I are in the process of buying a new house and I'm trying to figure out where the best place for the litter box is. The house has a huge laundry room and I think that's where I'll probably put it.

My question is about using a cat door so I don't have to keep the door to the laundry room open all the time. My cats have never used a cat door before, is it hard to teach a cat to use one? I'd appreciate any advise about using a cat door. Also any pros and/or cons, I want to know it all.

Thanks in advance.