This is my local PetCo. I could go elsewhere, but they are close and the prices are good.
We have 2 cats and a dog, so we spend our fair share of cash on our animals. We like to buy good food for the animals, but cannot spend a ton of cash on the ultra special premium extra fancy food found at specialty stores throughout the valley. Here we can get good quality food for a good price. We can also pick up those other necessary items like cat litter (they have a refill station which I like because its less expensive and more friendly to the environment).
I've found the staff here to be friendly and helpful, though they always seem to be understaffed.