Lemon and chilies tied on the doorways of homes, shops, business establishments is a common sight in India. It's believed to ward of evil eyes and spirits. You can also hang a decorative chili and lemon décor to protect evil eye warder to keep your home and business safe. Seven chilies and a lemon tied on a thread and hung outside the door are believed to ward off the evil eye of Alakshmi who is the evil sister of Goddess Lakshmi. Alakshmi is considered inauspicious and is believed to bring misery and poverty. 

This traditional battu has seven mirchis and nimbu made of clay, textured and painted to look like metal. 

It is also believed that lemon pepper has insecticidal properties, due to its hanging, the environment remains pure. Apart from this, it is also believed that lemon absorbs negative energy circulating around and positive energy is circulated in the atmosphere. Also according to Vastu Shastra, there is no negative energy in the house where there is a lemon tree, due to which there are happiness and prosperity in the house.