For those of you who own more than one dog I was wondering if you have them house trained to go outside and use the bathroom how does the scheduling work out? Do you let them all go out at one time or one by one? How do you keep track of who has went and who hasn't if you let them out all at once before taking them back inside again? Also, if you were thinking of owning three dogs at once is that ok? Two wouldn't be friends and outcast the third? I'm wondering because I am in the process of house training Jackson to go outside now and was thinking of adding some more buddies for him in the future and wasn't sure how all of that works out? I would love to hear opinions of those who are experienced in owning more than one inside dog at a time.