An aqueous seed treatment insecticidal and/or nematicidal composition in the form of a suspension comprising (A) at least one insecticide and/or nematicide in an amount of at least 3 weight %, based on the total weight of the composition, and (B) at least two surface active compounds, wherein (i) at least one is an anionic phosphate type compound, and (ii) at least one is a non-ionic alkoxylated phenol. Such compositions demonstrate improved dust-off performance when applied to plant propagation material, such as seeds.
