Flies like to bite dogs. They usually target the ears, but they sometimes go for blood on other parts of a canine's body. If flies bother your dog, avoid outdoor activities and try a homemade repellent.
Try a fly spray made with an ounce of citronella oil and cider vinegar. Add a cup of water and one leaf each of basil and bay.
Use a mixture of baby oil and permoxin in equal parts to create an ointment. This heals bites and prevents additional biting. Store it in a clean jar and use it during fly season. It will stay fresh for a few months. Make a new batch for next season.
Put a mentholated rub on the ears to protect them during fly season. You can also try a Vaseline product.
Apply a scented skin moisturizer mixed with water to your dog's skin before it goes outdoors. The gel in an aloe plant also works as a moisturizer and bug repellent.
Apple Cider Vinegar
Put a few drops of apple cider vinegar in your dog's water. The acid build-up in its body may keep flies away. Use apple cider vinegar mixed with Pine Sol, water and orange scent as a fly spray.