The present invention provides compositions comprising essential oils whichare effective for repelling and/or at least partly eradicating a variety of insects.Compositions comprising eucalyptus oil, neem oil, citronella oil and one ormore of lavender oil, tea tree oil and pyrethrum are provided. The compositionsare particularly effective in repelling and/or at least partly eradicatinga variety of insects and in treating certain ailments in an animal.