hindsight

The vet did a skin scraping, and doesn't think that Zorro has mange. Her skin problem is most likely due to fleas or an allergic reaction to something. Now I have to give her a bath in antiseptic shampoo 3 weeks in a row, and give her 3 antibiotic capsules plus an antihistamine pill twice a day for a few weeks.

Maybe it would have been easier after all, finding a way of getting her to swallow the once-a-month Trifexis pill.