Because it is very acid and acid breaks down grease.
There are actually quite a few natural cleaning products within your household that can be used for cleaning like lemon juice for example. It is a well known cleaning agent which is why there are cleaning products with a lemon scent to them.
Yes, mixed with salt it was a cleaning product used in Victorian times.
Any cleaning agent in the market would do the job but if you are looking for a cheaper way, try using lemon juice/soap and a sponge.
Yes! Lemon juice can be used in hot water. Lemon juice can be used for cooking & drinking!
Lemon juice can be used as catalyst in organic chemistry.
Lemon Juice and salt cleans items, because of the concentration of citric acid in it. This eats any bacteria that are going around. Lots of people use it to save money, from buying detergent.
Vinegar can be used to clean leather. You can pour vinegar on leather and let it dry, or blot the leather with a vinegar soaked cloth.
Lemon juice is sometimes used by people to help cleanse the body. Some people like to have warm water with lemon juice as an alternative to coffee and tea.
A mixture of lemon juice cannot be used to kill ants.
Lemon juice can be used in place of or along with freshly squeezed lemon juice to aid in weight loss. The lemon juice speeds up metabolism in either form of the juice.
Acids and bases are used in cooking (lemon juice & baking soda), chemistry (sulfuric acid and etc), and cleaning (bleach & soaps).
Mostly as I know, lemon juice or vinegar can be used to clean copper pennies. You can let soak in for a while to clean them. Good luck in cleaning them!