If aphids, whiteflies or other insect pests are infesting your household plants or garden, try mixing up a batch of this homemade, non-toxic insecticide with ingredients from your kitchen. You’ll save lots of money and won’t have to worry about dangerous chemicals getting into your soil.
In a blender, puree: 10 garlic cloves + 1 tablespoon of oil. Strain the mixture into a quart jar and add 3 cups of hot water and 1 tsp of dishwashing soap (not laundry or dishwasher detergent). Cap the jar and shake to mix. Pour the mixture into a spray bottle and spritz on the infected plants, making sure to get both sides of the leaves. Apply every three days for a week to control hatching eggs. Repeat as needed after rain or when problems arise. Note: keep any leftover garden treatment in a clearly labeled bottle and out of the reach of children.
Source: Reader’s Digest Homemade: 702 Ways To Save Money and the Earth