How To Prevent Flies Biting Dogs Ears. If your dog’s ears are often bitten by flies, apply a thin coating of petroleum jelly to the area. Make a natural fly repellent by mixing equal portions of apple cider vinegar and water.
It’s never too late to train your dog — “you can’t teach an old dog new tricks” is a myth. The main thing you should know about what can i put on my dog’s ears for fly bites is that you should always try to avoid any kind of insecticide or chemical. Make a natural fly repellent by mixing equal portions of apple cider vinegar and water.