If you’re asking for a homemade mixture that you can “pour down the sink and the drain will never get clogged again,” there isn’t a recipe that can guarantee that. Drains clog over time because of grease, soap residue, hair, food scraps, and mineral buildup.
A safe maintenance routine is:
Ingredients
½ cup baking soda
1 cup white vinegar
1–2 liters (4–8 cups) of very hot water (boiling water only for metal pipes; use hot tap water for PVC if you’re unsure)
Instructions
1. Remove any standing water from the sink if possible.
2. Pour ½ cup baking soda down the drain.
3. Slowly add 1 cup white vinegar.
4. Let the mixture fizz for 15–30 minutes.
5. Flush the drain with 1–2 liters of hot water.
For kitchen sinks
Avoid pouring cooking grease or oil down the drain.
Use a sink strainer to catch food particles.
Flush with hot water after washing greasy dishes.
For bathroom sinks
Use a hair catcher.
Periodically remove hair from the drain stopper.
What to avoid
Don’t mix bleach with vinegar, ammonia, or other cleaners. These combinations can produce dangerous gases.
If your drain is already slow or completely clogged, the baking soda and vinegar method often won’t clear a blockage. A drain snake or plunger is usually much more effective. If you meant a different “recipe” (for example, one you saw on social media), describe it or share the video, and I can explain whether it’s safe and effective.