Where do you guys buy your corgis dog food? I've been to the Petco by Coliseum area in Hampton and Petsmart in Newport News but I was wondering if there were any local stores? They tend to have smaller sample packs.. looking to try some for my puppy to switch her food off beneful before I buy the large bags. I know I can buy and return to Petco/Petsmart if she doesn't take to the new food when I gradually introduce it but what do they do with that opened returned bag? I would hate for it to go to waste.