Make the worst part of cooking the easiest with the Rear Grease Cup Liners. The Blackstone Rear Grease Management System makes it easy to manage the grease, but our liners make disposal mess-free. Place the liner in the grease cup before you start cooking and, once you're done, push the excess oil and scraps of food to the rear grease opening at the back of the griddle. The liner will catch all the mess easily. Once the liner is full, simply discard it and replace it with a fresh one to make clean up a breeze.