I have 4 ranging from 7 years to 15 weeks and its no problem at all. They all go out at the same time. They are baby gated when no one is home and use piddle pads when baby gated. Of course, Harley the baby will sometime take one of the piddle pads and play with it but it the center one that isn't tacked down. I say go for it! The more the merrier!
