This 'contraption' is pure genius. My son has been going on and off it for 5 months now. When I first bought it, he immediately bit it and would not let go. I used it mostly during his evening bath but then started carrying it with me to help him with teething. He spent weeks not parting in it, then suddenly lost interest. Now, after more than a month, he has rediscovered it and happily chews on.