I wipe down my mats with a soapy, wet kitchen sponge with dish soap, then ripe with clean water. If I have batting stuck in the cutting lines I use one of those throw away credit cards we all get. Carefully rub it the length of the strip of batting. This works better when the mat is slightly damp. It cleans up beautifully. I try to reserve one of my old mats for cutting batting only as it does stick to the mat. I turn my mats around on a regular basis so I haven't had much problem with deep cut lines. I do prefer the green mats. I believe that is Omnigrid.