How to Kill Aphids With Water, Soap & Pepper

Update

Aphids are soft-bodied, pear-shaped pests that eat the sap in leaves and stems, causing the foliage to become dry. As aphids feast on plants, they leave behind a honeydew substance that attracts ants. The honeydew also allows black mold to grow on the plant, which eventually dies.

Things You Will Need

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  • Garlic clove
  • Onion
  • Food processor
  • Bowls
  • Cayenne pepper
  • Colander
  • Cheesecloth
  • Spray bottle

When you notice aphids on a plant, kill them using a homemade solution instead of purchasing chemical insecticides that can harm the environment.

  • Puree a garlic clove and small onion in a food processor.

  • Pour the chopped onion and garlic into a large bowl. Add 1 tsp. of cayenne pepper and 1 qt. of water.

  • Stir the mixture to combine the insect spray ingredients.

  • Let the ingredients steep in the water for at least an hour.

  • Line a colander with cheesecloth. Sit a bowl under the colander to catch the liquid. Strain the mixture through the cheesecloth.

  • Pour the homemade insecticide into a spray bottle.

  • Apply the insect spray to all infested parts of the plant. Don't forget about the undersides of leaves.

  • Store the spray in the refrigerator for up to a week. Spray the solution onto affected plants every other day until you kill the aphids.

    • Tip

    Before using the spray, knock aphids off plants with a stream of forceful water.

    Warning

    Wear gloves to protect your hands and keep the spray away from your eyes and nose because it can cause irritation.

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