The swarms of tiny white flies are a type of garden pest called whiteflies. They are often found congregating on the underside of vegetable plants and ornamentals, and can escalate to large numbers. Whiteflies can be as small as 1/12 of an inch, are somewhat triangular in shape, and produce a sticky substance called honeydew, which can cause fungal diseases to form on plant leaves. They suck phloem sap from leaves, causing them to yellow and fall off. Whitefly populations are usually kept in balance by the presence of natural enemies such as lacewings, big-eyed bugs, or some species of beetles. Limiting the use of broad-spectrum insecticides that impact these beneficial bugs will allow nature to prevent whitefly issues without intervention. An established whitefly occupation can be reduced through the use of yellow sticky traps.