A couple of things to do. Dogs with bad ears commonly come from breeds that are drop eared and that have hair growing in the ear canals. Typically poodles, cockers and their mixes are notorious for the problem. The hair traps moisture and allows nasties to grow. If your dog has hair in his ear canals, you must get it removed on a regular basis, either by a vet or groomer. You can do the procedure yourself, if you get some kelly forceps and if your dog is cooperative. You can get kelly forceps from
eBay or
Amazon. Some pet supply houses carry them. Get someone (vet or groomer) to show you how to pluck the ears yourself.
Dogs can have ear infections without the hair of course. One of the main causes involves allergies, usually to food. You may need to change diet to keep the problem from coming back.
Here are a couple of homemade ear washes that are effective and relatively inexpensive:
1/3 c rubbing alcohol
1/3 cup Witch Hazel
1/3 cup distilled white vinegar
a few drops of Tea Tree oil (the expensive kind from a health food store)
Put in an applicator bottle and squirt some in the ear then use cotton swabs
to clean out the mess this loosens. A few times of using this and the ears
are clean and clear of yeast infections.
The other is a blue ear wash:
16 oz. of 70% isopropyl (rubbing) alcohol
4 tbsp. of boric acid powder
6 drops of 1 percent gentian violet solution
Substitute witch hazel for the alcohol is the ears are severely inflamed or
sore.
Mix and add a squirt to each ear. Gentian violet is a dye and will stain hair and skin, so be aware.