I have a senior chihuahua and these pads are not thick and leak horribly. I change the pad every morning before leaving for work. When I return 6 hours later it has leaked through the floors. Thankfully it is the bathroom and not my hard wood floors. Will not purchase again. Edit: The company contacted me to see if they could help resolve my issues. They offered a refund which never came. The thing is, if they change the bluish plastic underlining to a better product it would likely not leak through the floors. I had to use 2 pads to protect my floors.