yes he does suck on it unitil he puts his self to sleep, its very funny and cute ! before we go to bed , I always tell him we are going nite nite, so he lays his head down but then he starts looking for it and I tell hime were is your binky and he gets it chews on it for a whiel then he sucks on it and then he falls asleep, I do take it away once he falls asleep, I don't want my baby to have overbite teeth (LOL)