I bought one of these pet gates back when my grandson started walking so I could give the cats access to their litter boxes but not my grandson. Well at 24 months old...he can still fit through the cat door. So don't get this if you're trying to keep a baby out.
That being said, I got a Great Dane puppy around Christmas 2011. For the first couple of weeks he could fit through the cat door but after that he was too big. SO, this gate does what it's made for. It keeps the big dog away from the cat litter boxes as well as the cat food without having to confine the cats to one room. I have bought several more of these for other rooms as well. They keep the big dog out of rooms where he's not allowed (like my grandson's room with all of his small toys). My grandson can now open and close the gate by himself.