I live this daily! All my dck's are 15 months old and they all put everything they can in their mouths. My two dcb's are the worst because they are droolers too...so bad it just pours out their mouths sometimes (so gross!). I constantly spend my day taking toys out of their mouths and saying, "we don't put toys in our mouths". I've asked the parents to reinforce this at home, but I highly doubt that its happening. God, I hope they out grow this phase sooner than later.