My son is now 10 monthes old and he likes to chew and bite on the nipples of his bottles so it is definately time to switch to the sippy cup. I have seen the training sippy cups that have the silicone spout that is supposed to get them used to drinking out of a sippy cup but what I was wondering is if anyone has had any experience with them. My thoughts are that hes probly just gonna chew on it just like the bottle. But I have tried the regular hard plastic cups and he couldnt figure it out. So i need opinnions what should I do?