Put 2 chillies, 1 large onion , a whole bulb of garlic and half a cup of water into the food processor. Put the resulting mash into a bucket and fill with hot water. Steep for 24 hours before using the liquid to spray on aphids, grasshoppers and all chewing and sucking insects. Bury the mash where the infestations are the worst. This is used to deter cut-worms, aphids, caterpillars, ants, slugs and snails.