PROBLEM TO BE SOLVED: To provide a controlling and repelling agent excellent in controlling activities of Frankliniella occidentalis, and having low toxicity. SOLUTION: This agent for controlling the Frankliniella occidentalis contains at least one kind selected from the herb essential oil group consisting of basil oil, cinnamon oil, clove oil, garlic oil, ginger oil, mint oil, pepper oil, thyme oil, sage oil, Artemisia abrotamum oil, chamomile oil, eucalyptus oil, Hyssopus officinalis oil, Carum carvi oil, coriander oil, lavender oil, Melisa officinalis oil, camphor oil, Melaleuca alterifolia oil, citronella oil, lemon grass oil, Nepetacataria oil and rosemary oil.
