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White vinegar,
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Powdered boric acid (Ask your pharmacist, its usually behond the counter)
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isopropyl alcohol (rubbing alcohol),
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Betadine antiseptic solution. (NOT Betadine Scrub)
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An empty bottle to store your solution
Here are the directions for mixing the solution together. Be sure to follow them in the order listed... to get the boric acid to dissolve properly, you need to do it exactly like this
Pour 6 ounces of isopropyl alcohol in to your applicator bottle.
Add 1/2 tablespoon of boric acid powder.
Be careful not to get any boric acid on your skin or clothing. If you do, wash it off immediately.
Shake well, until the boric acid powder is fully dissolved.
Add 2 ounces of white vinegar. Shake well.
Finally, add one teaspoon of the generic Betadine antiseptic, and shake well.
Squirt in the ear until you have completely filled the ear canal with cleaning solution. Fold the ear back down over the ear canal, and rub things around so that the ear cleaning solution gets thouroughly around the inside of the ear. Keep the dog still for a couple of minutes. As soon as you let go, the dog's going to shake his head, and that cleaning solution is going to go flying out all over everything, so if you can do it outside or in a bathroom is better. If you get any of the ear cleaning solution on your skin, wash it off.
Apply the cleaning solution to your dog's ears daily until you start to see some improvement. Once things get better, you can cut back to once a week and when you're fully satisfied with the condition of the ear you can go two weeks between treatments. The ear cleaning solution can be stored at room temperature and it does not go bad with time.
One little tip: your dog won't object to you squirting this stuff in his ear so much if you make sure the solution is warmed up to body temperature first. They hate it when you squirt cold liquid in their ears! Don't use the microwave oven to heat the solution up, it's too easy to accidentally overheat it. Just warm the bottle in a pan of warm water like you would a baby bottle.