Ryan never liked his playpen , but i wouldn't say it's too late . a friend of mine still uses one at 15 months even though her son can walk. she sits him in there with play balls and he loves it . if he is good at amusing himself then i think you will benefit , as long as you put enough toys in. at least you know he's safe . my friend had a playpen that had the netting around the sides and padding on the rims , in the summer she got a cat net that you have to put over cribs , she pulled it over the playpen to stop flies , bees and any other pests getting in to her son.