Recondition your cricut mats with a magic eraser Then tape off the green sides with painter's tape and spray easy tack on the mat. good as new you'll never have to buy another matt.probably will work for the Cameo, too.
How to make Cricut Cutting mats sticky again - by Sami. Cover the edges of the mat, then spray it (outdoors) with Krylon Easy-Tack. Let it dry. The adhesive actually needs to dry before it becomes sticky. Dry to touch in 3 hours.
Use rubbing alcohol to clean your cricut mat. Just pour a little on the mat rub it around and take a rag and wipe it off. Take the mat and wave it in the air and dry it and it will be sticky! I did it twice took me a min!