Peppermint oil can be bought at most stores, but the purest varieties can be found at health food stores. If the peppermint oil is not pure and 100 percent therapeutic grade, the oil may not be truly effective.
Peppermint oil comes from the peppermint plant, which is in between that of a spearmint and that of a water mint. They grow in both Europe and North America, according to WebMD.
In the home, peppermint oil can be used for many purposes. It can be used to keep away pests such as roaches and rodents. Simply place 2 drops of peppermint oil on a cotton ball and put the cotton ball at the entry points of the home. It can also be used for indigestion and gas problems. Take the palm of one's hand and put 4-6 drops on to it. Then, rub the oil on the stomach area.
Many people also love to use peppermint oil to help with congestion. Take a single drop of the oil and place it on one's tongue. Then, drag the tongue along the roof of the mouth and inhale through the nose. This will help to spread the oil. To help improve concentration, take 2 or 3 diluted drops and rub them along the temples. The oil can also be used in diluted sprays to add a fresh scent to a room.