Disclosed is a pesticide composition comprising a pesticide in combination with a copolymer adjuvant, wherein the copolymer is selected from the group consisting of acid or salt copolymers containing individual quantities of maleic and itaconic moieties (such as AVAIL copolymers), said pesticide selected from the group consisting of glyphosate herbicides (particularly glyphosate) or synthetic pyrethroid or organophosphate insecticides (particularly malathion and permethrin), and mixtures thereof. Also disclosed is a method of pesticidal treatment, comprising the step of applying a pesticide composition as defined above to a surface selected from the group consisting of soil, plants, liquids, and hard surfaces.
