[GizmosDogShop]

Did the vet give you a hard plastic cone? Gizmo hated it too and would not move around very much when he wore it because he would run into stuff and get stuck in weird places.

If it is the hard plastic cone go to the local pet supply and see if they have the soft cones. They block so that they cannot lick but they are a malleable fabric so that they have more freedom and is probably a lot more comfortable. Maybe try that and see if he will use the restroom when he is wearing it. It might just be that the plastic one is too uncomfortable.