These use biological enzymes or bacteria to "eat" organic material like hair and soap scum. Products like Green Gobbler

Pour 1/2 cup baking soda followed by 1/2 cup vinegar. Cover the drain for 30 minutes, then flush with boiling water. 🛠️ Mechanical Removal (Highly Recommended)

Do not use chemical or boiling water methods if:

For those who want to avoid the toxic fumes and danger of lye/bleach mixes, Green Gobbler uses a different approach.