I have an aging dog who can't walk up and down stairs anymore. With a recent move to a 2nd story apartment, I started researching products, and even tried to make my own "potty box". I chose DoggieLawn for a few reasons: it was competitively priced, it was shipped to my door, and I could set up a recurring shipment - and easily change that shipment date. What I fell in love with was the quality, the service, and the real people who work for this company. It arrives fresh and green, and while it does get crispy eventually it doesn't stop my dog from using it. Oh! Did I say I get no odor whatsoever?
I started off with the large size for my 20 lb. Pug, I prefer the XL size because it gives her options (she has a hard time turning around). It's not a great picture but you can see it works for us.