A composite particle comprises i) an hydrophobic particle that adheres to the cuticle of one or more species of animal infesting arthropod and ii) at least one organic chemical compound admixed therewith, wherein the said organic chemical is capable of controlling the population of at least one animal infesting arthropod species. Experiments proved the efficacy of the particle, for example in powder form, in relation to a variety of arthropods, for example red poultry mites.
