Take a sharp knife and chop 2 to 3 hot chilli peppers, 1 clove garlic and 1 small onion into small pieces.
Note: You can use a food processor for this step as well as it chops the ingredients into very fine mixture. However, getting rid of the irritating smell of onion and garlic will be a hectic for you.
Shift the chopped hot chilli peppers, onion and garlic into a small or medium bowl. Leave the chopped Chilli Pepper mixture for 24 hours.
Add in some soapy water mix, sufficient to fill up a medium size spray bottle.
Pour the Chilli Pepper mixture into an empty spray bottle and seal it tight. Now, shake it for few seconds until all ingredients merge well.
Your Chilli Pepper Garden Spray is all set to go. Spray your garden on weekly basis and enjoy pest free backyard.