This grease liners will save you so much on greasy mess and time. I do use paper towels and clean these out if just a small amount of grease in this liners. But it's nice to if I have a bigger mess and no time I can just throw in trash can. My wife has also popped a paper towel inside this liner to catch a little grease from small cook. But these are amazing and very handy. These work with the Blackstone tailgater grill/griddle also