I have a friend that breeds rats so I don't have this problem, why cant you just say they are going to be pets? Especially if they are going to be breeders and your not walking in there every week. If you tell them what they want to hear that they are going to be little furry pets, they cannot turn you away by law. Stores can not pick and choose who they sell to. If they did this it would open them up to loads of lawsuits. They can have policies that stipulate a sale, but they cannot say "oh hes telling a lie these aren't going to be pets" that is a judgement=discrimination=big trouble for petsmart. Aside from this I have never had a problem with petsmart by me they have all been pretty cool for whatever I needed. My advice is don't go in looking to pick fights, be nice to them they most likely will be nice in return.