Ok so my 9.5 week old baby, Zima is CRAZY about the drawstrings on our pants/tops/jackets and of course our shoelaces also!!! whenever i sit down to play with him he pounces on my drawstrings immediately!!! I don't mind at all, the only thing that worries my husband and i is when he does it he grinds his teeth so hard you can hear him from across the room and every now and then he whimpers like he's hurting himself!!! He has lots of amazing toys of all different materials that i rotate around so he doesn't loose interest (he has one that he has all the time) but he plays with them for such a limited time.. however if i left my pyjamas on the ground he would sit chewing the drawstings for hours!! I feel like his teeth hurt and this relieves him but then he whimpers, and god help me if i try to take them away, he searches like crazy! Does anyone think it's dangerous to let him chew these?