Disclosed is a liquid pesticidal emulsion composition comprising (a) an aqueous continuous phase (b) at least one colloidal solid and (c) a dispersed oil emulsion phase comprising at least one substantially water insoluble pesticidally active ingredient, which is either itself an oily liquid comprising the oil phase, is a solid but is dissolved in an oily liquid present in the oil phase, is a solid and is dispersed within the oil phase or is present as a colloidal solid adsorbed to the liquid-liquid interface between the continuous aqueous phase and the dispersed oil phase, and wherein if the composition further comprises an emulsifier formed of a low molecular weight or polymeric surfactant, the composition comprises less than 0.5 weight % of the emulsifier. Also disclosed is a method for combating or preventing pests in crops of plants by applying the above liquid pesticidal emulsion to the desired area.
