Aggressive predators Hornets are not typically interested in human interaction and tend to keep their distance. However, any technician will tell you of the protective nature of this pest and advise against threatening the hive. Hives typically are about the size of a football and are covered by a strong outside casing which protects the interior from exterior predators. Usually nests are immediately visible hanging from trees, troughs, troughs or sheds. Hornets typically feed on other insects- However, are likewise intrigued by sugars, meats and liquid food debris. Liquid pesticides cannot penetrate the hive, and only limit populations. Dust applications and preventative exterior treatments prove the most effective in controlling this pest.