I have 3 cats, but only 1 has dandruff problems. She's already on a speacial diet due to wait and problems w/ UTIs, so I can't change her food. I brush her almost every other day because she has a very thick coat for being a short haired cat. I also give her a bath once a month, to help with the dandruff and to help her get rid of some of her excess hair. The vet says there is not anything else wrong with her, and it doesn't seem to bother her. Any suggestions?