1/4 cup table salt
1/2 cup baking soda
1 cup vinegar
1. Mix salt and baking soda until well blended.
2. Add 40 drops rescue charm, and stir well to mix.
3. To use: Pour mixture down the drain (expect foam and bubbles). Follow up with 1 cup heated vinegar. Let sit for 15 minutes, then run hot water down the drain for 30 seconds.