When I need a more specialized pet item or food that I can't get at Safeway/Target/Walmart I come here. On this trip I needed some enzyme based cleaner to treat an area some stinky stray cat keeps marking on my patio and I decided to transition my 14lb kitty from Iams Indoor Hairball/Weight Management to a more high protein food, Blue Buffalo Wilderness which they carry.
I have found that some of the items here are a tad pricier than the Target/Walmarts but they do have a bigger selection. But I often find myself coming here if not in the mood to brave either location.