I asked the same question and the answer I got was...."Because we dont have snakes that get big enough to eat them". But personaly I wouldnt buy them if they did, my supplier is quite a drive from Pet Smart so when I got my Sand Boa I went ahead and got my Pinkies there and they charge $10.99 for a box of 6 pinkies!!!! Can you imagine what a rat would cost ?
I can't get over how many people in other PetSMART stores lie to you guys, I find it disturbing.

PetSMART doesn't sell live feeder rodents because it's just the company's policy not to. In fact if we suspect that someone is buying an animal from us other than feeder fish, worms or crickets to feed to another animal, we are required to deny the sale. However some do go to extremes...I have considered getting a Gerbil as a companion animal and I've been told they won't sell it to me since I own a lot of snakes...nevermind that all my snakes eat f/t prey.

BTW, I work at a PetSMART, in case you didn't notice.

Also, while I get a nice hefty discount on in-store purchases, I STILL don't buy feeders from the store...I pick 'em up at the closest monthly reptile expo. Better quality, less than half the price. Several of us in the store do that, actually.

I just don't understand why Petsmart and Petco can't get a simple, 1 page caresheet explaining the proper prey size from baby to adult, proper temp/humidity, proper heating element, hide, and tank.
We do offer a care sheet, and I'll be damned if I have EVER seen someone buy a snake who took one with them. Then again I haven't read it personally, so I can't guarantee that the information is even remotely accurate. After all...we sell Captive Hatched now, which I find just plan disturbing and sad.

Also bear in mind that a lot of pet stores want to sell you stuff, and they assume that any cold-blooded animal needs lights and heat rocks and stuff. I for one refuse to push those things, and often do what I can to talk people out of buying our reptiles. We have so many great products and services, but...our reptiles are overpriced and not great quality. More than a few times I've found myself in a back room with an unwanted thawed rodent, cursing at another skinny, sad little Ball who has never eaten in his life...and probably never will.

And some of the non-reptile-knowledgeable people were supprised when I revealed that I buy my snakes from reptutable breeders, not our store.