Ovens can get dirty pretty quickly! But cleaning is *essential*, lest your apartment smoke up from burned-on cheese while you're throwing a Halloween movie watch (it happened to me)! These fit most standard-sized ovens, but can be trimmed to fit. They're PFOA- and BPA-free, heat-resistant up to 500°F, and dishwasher-safe.
Promising review: "Every Saturday, my grandsons spend the day and have frozen pizza, for their dinner — their choice. After having had to deal with the splatters and burnt cheese in a non-self-cleaning oven, I purchased these liners and am delighted to say they're wonderful. The pizzas are even finished a few minutes earlier, than expected. Apparently, pre-heating the oven w/the liners inside, on the rack, give them a boost, or something. Anyway, they're wonderful and I'd recommend them, to anyone, who wants an easy alternative to 'place directly on rack' frozen food." —Carolyn Wright
Get a three-pack from Amazon for $11.75.