I had absolutely no luck with the pad holders. Poptart, maltese, loves shredding and tearing pads into pieces. With the holders, he would just grab the pad in the middle and tear it apart that way.
So I finally beat him by buying the washable ones. He no longer can shred his pad. The first day I put it down, he went over to the pad to tear it apart but realized he couldn't do it with this type of pad. You should have seen the look on his face, it was priceless!!! Ha, score one for me!!!