Also, not to start an argument here but, what is the best substrate for babies, and at what point (age or size-wise) do they cease to require added precaution? I understand that impaction can be compounded by particularly tiny pelvic girdles, but some sort of burrowing medium would be tremendously appreciated, I'm sure. The other option might be to offer towels, layered cardboard, or a rucked persian carpet that he could explore. Somehow I feel that the tactile experience of digging has its merits though.



