PESTICIDAL COMPOSITIONS COMPRISING AN AERATED GEL CONTAINING HYDROPHOBIC SILICA

摘要

A pesticidal composition comprises, as the sole pesticidally-active component, a storage-stable aerated gel composition comprising 30 to 97 % by weight of water, 0.2 to 5 % by weight of a gelling agent selected from xanthan gum, sodium alginate and neutralised carboxyvinyl polymer and 2 to 5 % by weight of a fine particulate hydrophobic silicone-treated silica having a surface area of from 80 to 300 m<2>/g. The composition is in the form of fine particles of an aqueous gel containing the water and gelling agent, the surfaces of which fine particles are coated with a coating of the finely particulate hydrophobic silica. The composition is useful in a method of controlling pests, particularly insects and acarids.