| 摘要 |
<p>Novel methods, compositions and devices are described, whereby pests such as insects may be controlled by applying to the pests or their locus a foamed pesticidal composition including an effective amount of at least one pesticidally active agent. The application is conveniently achieved via a pressurised can device which discharges the foam via a nozzle under the effect of a lower alkane propellant. Compositions comprising the pesticidally active agent entrained in a predominently aqueous carrier are also described, both in the foamed condition and the preliminary, unfoamed, condition.</p> |
