Lucy may be cute, but she’s hardly clean, given the various excreta she produces. As a result, there’s no need to sterilize anything around your house just because she may come into contact with it. For the same reason, doctors no longer recommend bottle sterilization, at any age. Mothers who are nursing certainly don’t sterilize their breasts at each feeding, even if some milk stays on the nipple. The milk sugar and the skin form a perfect growth medium for bacteria. Doesn’t seem to bother Lucy!