TBH, I knew that there was a liner available, but hadn't looked into it seriously. Which I just did thanks to your post. In the process, came across several threads -- not very kind to this contraption whose purpose in life is to reduce the risk of your food being made into a pulp by a meticulous bear -- including several suggesting that the Ursack major was actually pretty good against critters after all (in my previous search I had come across reviews suggesting that squirrels were able to chew Kevlar) so I end up much less inclined to invest in a plastic barrel for this summer... I'll probably stick to the Ursack, perhaps stuffing it with a couple of cans just to frustrate squirrels, raccoons and such