I am absolutely infuriated that upon opening my 2 year olds miracle cup I found bits of black bits floating around in the water. Only God knows how long his been consuming the black mould build up on the underside of the rubber lid! When cleaning the cup i rarely pay attention, i just chuck any remaining water straight down the sink but on this one occassion I decided I was going to give my son some juice and to my disgust I see huge bits of mould in the water! I thought this may be a one off however I bought another munchkin latch bottle ( yes I bought another one! Not for my son obviously, but to test out this mould situation) i filled up the cup and drank from it myself leaving a small amount of water in the cup overnight, after about 2 weeks the mould started to emerge! And its been a month and the mould build up is horrible (obviously I stopped drinking out of it once i noticed the mould) mould/mold however you spell it. Im just really disapointed and want to warn others out there! As im sure long term usuage of this cup will evidently affect the child drinking from it! Black mold can not be good for you!!!!! Any one else experienced this problem ?