Exemplary insect repellent, attractant, knockdown and kill compositions may comprise vanillin and two or more active ingredients selected from: geraniol, rosemary oil, winter green oil, methyl salicylate, linalool, tetrahydrolinalool, cedar leaf oil, thyme oil white, thyme oil red, thymol, mint oil, peppermint oil, linseed oil, sunflower oil, piperonal, piperonyl alcohol, benzyl alcohol, lime oil, d-limonene, eucalyptus oil citridora, eucalyptus oil, cinnamon oil, cinnamic alcohol, cinnamyl alcohol, geranium oil, lavender oil, tetrahydrolinalool, phenethyl propionate, clove oil, safflower oil, eugenol, 1,8-cineol, α-terpineol, triethyl citrate, isopropyl myristate, white mineral oil, lemon grass oil, lilac flower oil, black seed cumin oil, geranyl acetate, citric acid, citral diethyl acetal, ascorbic acid, canola oil, corn oil, soybean oil, sandalwood oil, isopropyl alcohol (IPA), pheneythyl alcohol, white mineral oil. The composition may further comprise castor oil based emulsifier, xanthum gum, potassium sorbate, lecithin, sodium lauryl sulfate and/or a diluent, for example.