Process for the control of pests

摘要

The invention provides a method of dipping a number of animals of a species with a pesticide using a formulation of the pesticide which is subject to stripping of the pesticide during dipping of successive animals or groups of animals, the method including: establishing a predetermined level of a dipping liquid containing a first concentration of the pesticide (CIC) in a dipping vessel the concentration providing safe and effective pesticidal treatment; dipping the animals in the dipping liquid; and maintaining the predetermined level of the dipping liquid in the dipping vessel by addition thereto of a replenishment composition containing a second concentration of the pesticide the second concentration of the pesticide (CCR) being greater than the first concentration of the pesticide, to thereby maintain a safe and pesticidally effective concentration of the pesticide.