Making your Cricut mat sticky again

I personally use a wide tip Zig Two Way Glue pen to make my mats sticky again.  I got the idea from My Pink Stamper - Robyn.  But here is a link to Laurie's blog  and she uses Aileen's Tack It Again mixed with water.  http://www.hidinginmycraftroom.com/2010/08/making-cricut-mats-sticky-again.html