We have had CeCe, an English Mastiff rescue, for about 1 month. She seems to have chronic ear infections. Any advice? Meds from the vet that work? Over the counter plans that work well? She got to two 'opti packs' that seem to have drained (yellow river?) right out of ear overnight. CeCe seems whiny and lethargic. Any input is appreciated. If I can get the infection cleared up, the vet said to clean her ears every two weeks or if her ears get wet with some OTC wash. Sound about right?