Since the Zymox hasn't helped Jack's ear infection, the vet has now given us Posatex, with directions of putting one drop in ears for 10 days and then back to the Zymox after that once daily until symptoms are alleviated. Praying this helps our boy, as it is killing us watching him try to scratch his ear and unable to because of his little legs. Hate the thought of having to us the Zymox again! Has anyone had any experience with Posatex?