I have no idea how many times they go out because I can't count them all. They love it outside. Sometimes they drive us nuts going in and out. When we work, they get to go out in the morning, at lunch, and after work. However, when we're home, they like to go in and out more to just play but we don't mind because we've got kind of a small house for them to play in. They only problem is when they are digging! But, we've got more and more toys out there to try to keep them busy while out there. Plus, we've had a pretty warm winter here so it's only during the rainy times that we really try to discourage them from going out so often. It's so cute to see them playing together though!