Pesticidal compositions comprise water-decomposable compounds, adapted to generate toxic gases upon contact with water, held on a porous, fibrous carrier material.
Compositions, devices, and methods are disclosed for controlling insect activity wherein an insect control agent is self-adhered to a rough-surfaced fiber. Preferably the fiber is a graft polymer of cellulose and an ethylenically unsaturated material copolymerizable with cellulose. The invention provides extended control of insect activity.
The present invention relates to a pesticide comprising a molded body made of a water-insoluble organic solid substance in which at least one finely divided metal phosphide is embedded, the molded body being coated on at least one side with a fibrous substance which is permeable to water vapor and the fibers of which at least partially extend as far as the embedded phosphide particles, and to a process for producing such a pesticide.
A pest control product is provided from a metal phosphide particle coated with a water soluble coating that has been rendered water repellent. The coating also contains a material which will chemically or physically disintegrate to cause apertures in the coating to provide access for water to the phosphide particles.
