Well we already had it in the house, so DS2 has been playing with it for ages. All four of them can sit for hours building things. We do have some duplo/megablocs, but mostly lego and thats what he plays with the most. We haven't had any issue with him putting it in his mouth either luckily. But if I were offered some I would take it and if you don't think he's ready, or you think DS2 will just eat it, then put it away till they are older. Lego is expensive so the less you have to buy the better