1. Clean the water stain on the stainless steel surface: Lemon contains a lot of citric acid, which can decompose the dirt on the stainless steel surface and make the stainless steel products as bright as new.

2. Cloth sofa cleaning: Sprinkle a little baking soda on the sofa, then wait quietly for about 15 minutes, and then suck it off with a cloth vacuum cleaner.

3. Chopping board disinfection: You can cut a fresh lemon, wipe the surface of the chopping board with the lemon, then sprinkle some edible salt, let it stand for half an hour, and then rinse it.

4. Cleaning the oven: sprinkle a handful of baking soda in the oven, then add a bowl of water, and then wipe it clean after heating.

5. Clean water stains on the faucet: put water and vinegar in a plastic bag, wrap the faucet and let it stand for 15 minutes.