I hate cleaning my grill.  It Is a dirty unsatisfying job.  When I first got the grill I lined the drip tray with aluminum foil.  It helped, but because of the foil size there were always seams where the grease managed to work its way through. With liners they are precut to fit the grill pan and heavier grade than typical roll foil. There is still some stuff to clean up, but of it is on foil liner and can just be thrown away.  Less cleaning and mess is always good with me.