As we all know lemons are pretty sour. Chemically speaking, what your tongue interprets as sour is citric acid.

Did you know??? Lemons are quite acidic — more acidic than orange juice and black coffee, although not quite as acidic as your stomach juices — and this is the key to their effectiveness as cleaning agents.

They can eliminate stains caused by other acids, or combine with alkaline compounds to create powerful chemical reactions.

Unique facts about lemon…

Lemons can remove stains.

After having some good times at a party ,Lots of things that stain clothes, including wine, coffee, lipstick, paint, and sweat, are acidic. Because like dissolves like, these stains need an acidic water-based solution. And the same principle holds for food-stained surfaces like cutting boards, plates, or bowls.

Lemon juice can also remove alkaline “stains” like limescale, that chalky white substance that often builds up on water fixtures or inside sinks and bathtubs, and rust. Here, the acidity of the lemon juice reacts with the limescale (calcium carbonate) or the rust (iron oxide) to soften and dissolve the deposits.

Lemons are antibacterial.

You may or may not already know that lemons are antibacterial. Their acidity creates a hostile environment for many kinds of bacteria, including those that cause salmonella and E. coli. It’s important to note, however, that lemon doesn’t have this effect on all pathogens, and also that it doesn’t kill them — it just makes them inactive.

Lemons neutralize odors.

Lemon’s acidity strikes again! Some types of bad smells (like from cooking fish or vegetables decaying in the garbage) are alkaline, so introducing acidity neutralizes the odors.

If the smell is coming from one place, like the garbage disposal, try dropping a cut-up lemon in there, then grind it up to make your sink lemony fresh. If the whole room reeks, try boiling lemon peels to get those fragrant acids to combat the stench in the air.