Still trying to sort my gsp’s ears out. Have been to the vets had treatment costing £200 for one ear! Cultures taken proved the problem was yeast. The next vet step is putting her under anesthetic and flushing her ears out.. then follow up with steroids (probably for the rest of her life!) she’s only just 2! I am now trying the holistic approach. I’m trialing colloidal silver 20ppm twice a day . Stinky ears and Thornit powder didn’t work. Any suggestions for other “cures”? Zymox has been suggested but is rather expensive..but if it would work I’ll try anything! Thanks all.