While this is not the worst pet store I've ever been in, I have absolutely no desire to return. Everything about it seems run down and outdated. Sometimes aesthetics don't matter to me as long as I'm getting a decent product or a good deal, but it's kind of depressing for a place that serves as a home to live animals.
That said, the animals seem to be okay - I've seen some pet store horror shows (animals without access to water, animals stuck between the cage and the walls) and Pet World doesn't seem to be in that league. Everything looks pretty dingy, though, and the bathroom was downright disgusting. There were ants crawling around on the floor and a crushed cockroach on the ground. Gross. If I had a pet I wouldn't bring it in with me for fear of what they'd find on the ground.