JohnnyTsunami said..
Try cleaning it with soap and water.
+1: use some regular detergent such as the ones used to wash floors, with a brush. It may get rid of dust and oil residues that could make your pad slick.
Otherwise, use some wax. One application on a pad should suffice for a very long time.
I bough ultra thin, socks-like, latex boots ("wetty"). They come with slick soles, they just instruct to apply wax on them once, before the first use, no need to re-apply. And it works wonders.
