My DD is four in a week. She still does all her 'stuff' in her potty. I know she wees in the low level loos at preschool but refuses to poo in those. She will also wee in public loos if I lift her onto the seat. She just seems a little small to use a toilet but then again she seems much too big for her potty. But she will ONLY poo in her potty even though...sorry to be gross ..but her bum gets covered in poo because she's too big for the potty now. When's it time to get rid of the potty and can anyone recommend something that would help her use the toilet?