I'm having a little touble with Callie. At four months old she is trained for piddle pad.... mostly. She still has a tendency, every once in a while, to pee on the side of the pad. In order to counter this (and to make things generally cleaner) I put her pad in a litter box. It is so much neater, but about once a day Callie still pees on the side. Does anyone have any advice on how to train her to use the litter box consistently? We're going home to my mothers for christmas and I desperatly want her to give a good impression to my neat freak mom!