How often do you clean your GSD ears? And what product do you use? When we were in puppy kindergarten, the trainer said we should clean their ears often and the best kind to get is the stuff you squeeze into their ears, rub a little and then let them shake it all out. I've never cleaned Chevys ears and everytime we go to the vet, his ears are checked and the vet never says anything about them. Thanks for any tips and advise!