Bebe's got a whole bunch of scabs on her lower back. This is the second time it's happened. The first time, the vet said it was a bad flea infestation (He only found flea dirt, though) but we can't see a single thing on her. This is the second time it's happened and we can't afford to take her to the vet. We've been keeping flea product on her but this time it's really bad and she's starting to scratch them open. She's in a lot of pain from them. I want to know if it's safe to put some kind of ointment (possibly neosporin) on her back, and what her problem is. We don't know if it's stress, or allergies, etc.