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 ofwater, 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 ofa fine particulate hydrophobic silicone-treated silica having a surface areaof from 80 to 300 m2/g. The composition is in the form of fine particles of anaqueous gel containing the water and gelling agent, the surfaces of which fineparticles are coated with a coating of the finely particulate hydrophobicsilica. The composition is useful in a method of controlling pests,particularly insects and acarids.