Dispersion comprising, in addition to water, 0.5 to 20 wt.% of hydrophobicsilica, 0.01 to 10 wt.% of a gelling or viscosity-increasing additive, 0.1 to1 wt.% of a preservative and 0 to 1 wt.% of a surface-active substance. It isprepared by a procedure in which the individual components are dispersedsuccessively or together into the water and in this procedure the individualcomponents are deaerated before and/or during the addition or the dispersionis deaerated during the individual dispersing steps. The dispersion can beemployed as an insecticide.
