I have two senior dogs, so I have 10 years of experience with countless brands of dog pee pads - whether used for puppies, foster dogs, senior dogs with health issues, etc. I have tried them all. This year I learned of this product, Pet Life charcoal dog pads, and they have changed my life! They are hands down the best quality dog pads you can buy. They have 6 layers to trap all liquid, and the bottom is a amazingly strong, non-skid, plasticized bottom, so they never, ever leak. Plus, when the dog pees on the pad, it immediately soaks up the liquid so there is no tracking and no spills. AND, it completely eliminates any odor. They are truly remarkable! Right now I have 250 at home, and I hoard them like gold. When I get a $10 off coupon from Choxi or Smartbargains, I immediately buy another pack of 100 (which are usually around $39.99), because around $30 for 100 is a TOTAL steal, given their superior quality. Don't hesitate, don't waste time and money on other brands, buy this and you will be SO happy.