Questions for those with residential refrigerators

We use the rubber shelf liner that we get in Walmart. We don't use it to protect the glass shelves, although it does perform that function. We use it to keep stuff from migrating all over the inside the fridge. If I put the mayonnaise at one spot, I expect to find it in the same location the next time I open the door. We also use small plastic drawer organizers to keep like things together.