Having a challenge with my own son (he'll be 3 in July). I still have to put bibs on him because he drools. We do use a straw cup for him as I read that this is good for increasing muscle control in the mouth/decreasing drool. I also think his drooling is related to the fact that he is a thumb sucker...and perhaps that he has his Dad's 'pre-braces overbite' and small chin. I am torn...do I let him continue to suck his thumb (& if so, how?) & just deal with the drooling (this all too shall pass).