A clean plastic bucket in which to mix the ingredients
1 quart of 3% hydrogen peroxide (usually sold in pint bottles, so you’ll need two; use of other strengths is not recommended)
1/4 cup baking soda (do not use washing soda, which is much stronger and will burn your dog’s skin.)
1 to 2 teaspoons of liquid detergent (Softsoap and Ivory liquid are preferred)
How to Use It
Apply to dry dog, working well into the fur. Let stand for about five minutes, then rinse with tepid water; repeat if necessary. Do not store this mixture; it loses it effectiveness and more importantly, it releases oxygen gas and the container could explode. It may bleach the dog’s hair (but better that than the smell!). And remember, the sooner you deal with the skunking, the better, as over time, the smell sets and is harder to eliminate.
Source: Paul Krebaum, Chemical & Engineering News (1993)