Vinegar and baking soda can be used together to remove stains.

Take removing stains on the faucet as an example. The method of use is as follows.

Materials: Appropriate amount of white vinegar and baking soda, a watering can and a rag

1. Apply a layer of baking soda evenly on the faucet.

2. Put white vinegar in a spray bottle and spray paint on the baking soda.

3. When the two meet, they will produce a chemical reaction and produce many small bubbles. These bubbles can remove attached stains.

4. Wait for about 1 minute and wipe off the remaining dirt with a clean rag.

5. The faucet has returned to its previous cleanliness.