In commercial and everyday use, the term weight is usually used to mean mass, and the verb to weigh means to determine the mass of or to have a mass of. Used in this sense, the proper SI unit is the kilogram (kg).
For other uses, see Aphid (disambiguation). Aphids, also known as plant lice and in Britain and the Commonwealth as greenflies, blackflies, or whiteflies (not to be confused with jumping plant lice or true whiteflies), are small sap-sucking insects, and members of the superfamily Aphidoidea.
Release Aphid Predators. Many insects eat aphids, and releasing these natural enemies of aphids into your yard or garden will help to kill aphids. Lacewings and lady bugs, or lady beetles, are among the insects that kill aphids.elease Aphid Predators. Many insects eat aphids, and releasing these natural enemies of aphids into your yard or garden will help to kill aphids. Lacewings and lady bugs, or lady beetles, are among the insects that kill aphids.