I wanted to try fresh patch so I ordered a large to start with. When the package came, wow! I was more then impressed with the quality of this piece of grass. I'm a breeder and it is very important to keep my puppies space clean. This is not only efficient but attractive in their puppy pen. I have upgraded for an xl weekly for my 2 litters of GSD's totaling 14 pups. I think their puppy parents will be pleased knowing their dogs already know the appropriate place to go to the bathroom. I will be recommending fresh patch to the puppy parents until their puppies have been full vaccinated against parvo. Most puppies should not go to pet stores, walks, dog parks and sometimes even their own backyard, as parvo could be lurking anywhere. This will ensure that their puppy has their very own safe space to relieve itself. Thanks again Fresh Patch. I've mentioned ya'll on my website as well! EXCELLENT PRODUCT and very affordable.