Hello! My DS started opening our stair gates at the age of 2 years and 2 months. It's driving me mad now that he can go up and down the stairs whenever he wants to. I still think he's too young to go up and down on his own, so I have to go with him, baby in tow.
How old was your toddler when he/she worked out how to open the stair gate? Do you have any advice for preventing them from going up and down whenever they want to?