Compounds and compositions having knock-down or blood feed inhibition activity against insect pests

A method for controlling a nuisance, disease carrying or haematophagous dipteran, triatominae, culicoide, or cimicidae insect pest comprising:

• applying a composition containing a knockdown or blood feed inhibiting effective amount of a first insecticide (a) 4-trifluoromethylnicotinamide and a second insecticide (b) to such insect pest or to a locus where such control is desired, wherein the second insecticide (b) is selected from the group consisting of abamectin, alpha-cypermethrin, amitraz, avermectin, azadirachtin, bendiocarb, bifenthrin, broflanilide, buprofezin, clothianidin, cypermethrin, cyromazine, d-d, trans cyphenothrin, diafenthiuron, dicofol, dinotefuran, diflumetorim, emamectin benzoate, etofenprox, etoxazole, fenitrothion, fenazaquin, fenoxycarb, fenpyroximate, fipronil, fluacrypyrim, flubendiamide, flupyradifurone, fluazinam, imidacloprid, malathion, metaflumizone, picoxystrobin, propoxur, pyriproxyfen, spinosad, sulfoxaflor, tebufenpyrad, thiamethoxam, trifloxystrobin, triflumizopyrim and a compound represented by the formulae 42-63: