Man, I'm glad I read this thread. I'm in Northern VA, too, and a month ago, Bella got this weird ear itchy/blotchy/blistery thing. Initially, the vet said it was an infection. They gave meds, it got worse. Finally, they did a swab and said it was yeast! They gave her the appropriate meds, and her ear looks much better, thankfully.
I recently switched Bella from that horrid Lamb and Lentil to Salmon Tunalini, and I started giving her yogurt everyday. On L&L, her tear stains were horrible. Now, on ST, she has the face of a baby bulldog. :D
She obsessively licks her paws, maybe a little less now, but still frequently. I wonder if this irritation (ears, paws) is because of local seasons. I'm so scared to try a different Fromms because of how poorly she looked on L&L. I think I'll stick with ST, and hope the yogurt helps her.