wee ones and litter boxes

I was just curious when newborns should be introduced to a litter box. The little ones I found have *just* started opening their eyes, but I'm wondering when they start gaining control of their bowels, etc. Also, when do they start eating stuff besides KMR? :) Thanks everyone.

I am not experienced in this but maybe someone else can help you. Those wee ones are just prescious, aren't they?

I would say,maybe,at six weeks,when they can walk,so they dont get the idea,taht the Litter Box,is a Play Area!