These tiny, winged insects appear in large numbers, typically on the undersides of leaves; vegetables and ornamental plants are favorites. Both the adults and wingless, transparent nymphs suck sap from plants. Affected leaves may be stippled yellow and covered by black sooty mold fungus. When the infested plants are disturbed (by humans, pets, or the elements), whiteflies scatter.

Commercial product: Insecticidal soap spray (such as Safer), or horticultural oil
Home remedy: Homemade soap spray (add ½ teaspoon mild dish soap and 1 teaspoon cooking oil to a 1-quart sprayer filled with water)

Gentle pest controls