I'm having the same problem. I was lucky to have extra mediums when they ran out but I still need smalls... you could try Aqualand, but I don't really trust them as far as mites and stuff... I'd call first though because they get rats from the same supplier Laura and Sue get them from. They charge a little more but it's still wayyyyy less than Petsmart/Co. I hope that helps... I'm just kinda waiting things out, mainly worrying about running out of weans for my little guy.
