Why it works: Soap suffocates scale insects and removes them from plant surfaces.
How to use:

Mix 1 teaspoon of mild liquid soap with 1 quart of water.

Spray thoroughly over leaves, stems, and branches, making sure to reach the undersides of leaves.

Repeat every few days until scales disappear.

4. Garlic and Chili Spray

Why it works: Garlic and chili have natural insect-repelling compounds that discourage scale insects from feeding.
How to use:

Blend 2 cloves of garlic and 1 small chili pepper with 2 cups of water.

Strain and pour into a spray bottle.

Spray affected plants every 5–7 days.

5. Beneficial Insects

Why it works: Ladybugs, lacewings, and parasitic wasps are natural predators of scale insects.
How to use:

Release these beneficial insects into your garden or greenhouse.

Monitor plants to ensure the predators are reducing the scale population effectively.

Additional Tips