Oh yes, I remember one time I went there to re stock on some mice since PetCo is really the only place I can get some frozen thawed food, I took a peek at the baby corn snakes and this poor snow corn was just COVERED in mites. I mean they were all around its eyes, underneath its scales, ventral scales, and the poor thing was terribly thin. Well I had a talk to the person that was keeping care of the reptiles and told him about the mite covered corn, and he just said that he'd never noticed that ( and said it just looked like dirt) >.< Well he said that he would fix it up immediatly, but I went ahead and told him what to properly do since I didn't exactly trust that guy xD
At least the pet smart reptile guys actually know how to take care of them. I remember when one person was selling a ball python and she didn't want to see him go because she loved him a lot xD