For a slow, smelly drain, baking soda and vinegar is a safe, eco-friendly first step. It won’t damage pipes, costs pennies, and is always worth trying before you call a plumber.
This method is most effective for slow drains, grease buildup, soap scum, and organic matter (like hair and food residue). It is not effective for complete, standing-water blockages or solid objects. how to clear clogged drain with baking soda