I bought a guinea pig from here a couple of months ago. I was so excited because it was my first pet that actually belonged to me. I spent about close to 90 in total for all supplies and the guinea pig. However three days after purchasing the little guy I noticed his ear was peeling with dry skin. IT WAS RINGWORM! I went back to exchange or return him and the sales woman told me that yes he probably had ringworm and that I shouldn't exchange him. She then let me take him home.
I returned him a week later because ringworm is highly contagious and I didn't want my two dogs to catch it. This time the cashier told me that the sales woman shouldn't have even let me take him home and that it is petsmarts fault and responsibility to treat. He told me that he would call me when the guinea pig was fully cured.
Blow in behold a week later I had ringworm on my arm and while I was treating my ringworm the guinea pig was fully cured an ready to pick up. I didn't want to get him though because I didn't want him to catch it again from me this time!
I don't recommend buying guinea pigs from here because the cage was still not clean after I returned my guinea pig. It still had a lot of poop and this was about a 2 week frame. And RINGWORM IS CONTAGIOUS so probably all of the guinea pigs there have it.