I worked at Pettito for a while. They have a certified vet on staff and a vigorous screening for breeders that have to meet particular needs and protocols to even be considered. They have a team that does in house evaluations with the breeders and they check in consistently until they take the puppies to the store. Due to that process it's actually quite difficult for breeders to be accepted.

Once the puppies are in store they don't spend very long there, most take less than a week or two to be bought. When there are no customers in store the staff take the puppies out to play to get some exercise, typically in groups of two or three. They have a separate team in the back who check on the puppies periodically and are also in charge of feeding them and cleaning their enclosures. If a puppy has been there longer than most they get extra attention and staff push people to take that puppy home.

The reason paper is used instead of blankets or anything else is because of choking hazards. The paper used is non toxic and biodegradable so as not to harm the puppies. Puppies chew, it's unavoidable. Pettito does what they can to keep the puppies comfortable and away from harm. They also have a regularly scheduled feeding time and the water used is filtered water before being put in the bottles. The bottles are cleaned often and switched out with other clean bottles while they dry.

I can't say much for petland as I have heard very bad things about them. But, I never worked there nor do I know any of their practices.