TECHNOLOGY FOCUS - BIOLOGY - Preferred Materials: The active ingredients are plant extracts from Mentha arvensis, Eucalyptus globulus, Citrus limonum, Lavendula officinalis, Rosemarinus officinalis, Thymus vulgaris, Juniperus virginiana, or Eugenia carophyllata. The formulation further comprises plant extracts from Pinus sylvestris, Melaleuca alternifolia and/or Juniperus communis.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Materials: The plant extracts are essential oils from the leaves or flowers of the plants or skins of the fruits of the plants. The carrier is a naturally occurring plant oil, preferably grape seed oil. Preferred Composition: The formulation comprises greater than or equal to 80 wt.% inert carrier, preferably plant oil, and not greater than 10 (preferably 0.0001-4) wt.% active ingredients. The formulation comprises 0.05-0.4 wt.% Mentha arvensis, 0.05-0.4 wt.% Eucalyptus globulus, 0.05-0.4 wt.% Citrus limonum, 0.05-0.4 wt.% Lavendula officinalis, 0.05-0.4 wt.% Rosemarinus officinalis, 0.05-0.4 wt.% Thymus vulgaris, 0.05-0.4 wt.% Juniperus virginiana, and 0.05-0.4 wt.% Eugenia carophyllata as active ingredients; 0.01-0.4 wt.% Pinus sylvestris essential oil, 0.001-0.4 wt.% Melaleuca alternifolia essential oil and 0.001-0.4 wt.% Juniperus communis essential oil; and grape seed oil (balance). ACTIVITY - Insect Repellent; Pesticide. No biological data given.    MECHANISM OF ACTION - None given.    EXAMPLE - A formulation comprising Mentha arvensis essential oil (0.2 wt.%), Eucalyptus globulus essential oil (0.2%), Citrus limonum essential oil (0.2%), Lavendula officinalis essential oil (0.2%), Rosemarinus officinalis essential oil (0.2%), Thymus vulgaris essential oil (0.2%), Juniperus virginiana essential oil (0.2%), Eugenia carophyllata essential oil (0.1%), Pinus sylvestris essential oil (0.01%), Melaleuca alternifolia essential oil (0.01%), Juniperus communis essential oil (0.01%), and grape seed oil (98.47%) was tested in Scotland against both Highland and Lowland midges during the period June until September. The formulation protected the user on a camp site from bites. Dead midges were found on the user's legs.