Yoga/exercise mats are way better than shelf liner.
Actually I found those yoga mats do a WAY better job sticking anything you need not to slip and they are larger than shelf liner.
I use two of them on my cabover under the dog crates. Yup the dogs ride up in the cabover when traveling on down the road. Yoga mats keep the crates firmly in place.
Don't buy the expensive yoga mats from a fancy yoga health club place. They sell them way cheaper at Walmart! :C
http://www.walmart.com/search/?query=yoga%20mats%20and%20exercise%20mats&typeahead=yoga%20mat
