litter-robot by whisker Installing the Litter-Robot 4 Fence The Litter-Robot 4 Fence snaps onto the bezel at the globe entrance and acts as a barrier to contain kicked-up litter. LA LIT EY © Hold the fence upright inside the globe. @ Tilt the bottom of the fence toward you to align the back of the fence with the bezel. @ Gently push down on the front of the fence to snap it onto the bezel. Make @ Press the Reset button @ to zero the weight sensors. sure the fence is level.