Agent against parasitic or harmful insects or mites on humans and households, domestic or farm animals and useful plants, comprises glycerin as an active component, which is mono- or di-esterified with one or two different or same aliphatic optionally saturated 6-18C-carboxylic acid. An independent claim is included for a kit comprising the agent and one or more products for the mechanical removal of parasites. ACTIVITY : Antiparasitic； Acaricide； Insecticide. MECHANISM OF ACTION : None given.
