I thought I might share how I get my cricut mats clean and then stickey again.
Its cheap and simple. I remove the stickiness with GOO GONE that I bought at Walmart. I spray it on, let it sit a little while then scape it off with a spatula, then spray again and wipe off with a damp cloth.
I use a repositionable glue stick to make it stickey again. I think its by 3M and I also bought it at Walmart.
I have tried "Stick away and Stick and stay" and I think it makes my mats too stickey.
Try my technique and let me know how it worked for you.