The little white bugs flying around outside are most commonly woolly aphids or whiteflies. Woolly aphids are tiny insects covered in a white, fuzzy wax that makes them look like little white fluffs floating in the air. They feed on plant sap but do not bite or pollinate. Woolly aphids often appear in summer and early fall and tend to die off as it gets colder. They can leave behind a sticky substance called honeydew, which may create a black fungus on surfaces outside. Whiteflies are another type of tiny white flying insect related to aphids. They are about 1/16 inch long with powdery white wings and are usually found in clusters on the undersides of plant leaves. Whiteflies also feed on plant sap and excrete honeydew, which can harm plants by promoting sooty mold. Neither woolly aphids nor whiteflies pose a direct threat to humans, but they can be annoying and potentially harmful to plants. Both pests are difficult to control once populations are high and usually persist through warmer months before dying off in colder weather. Common management includes natural predators, insecticidal soaps, and waiting for cold weather to reduce their numbers.