The present invention relates to a pesticidal control device that includes at least one pesticidal active ingredient, cellulose fibers, and a polymer or polymer matrix. The combination of the cellulose fibers with the polymer allows for a higher loading of liquid pesticidal active ingredients within the pesticidal control device, maintains the active ingredient within the control device during transportation, storage and handling, and provides higher efficacy or control of pests during treatment. The pesticidal control device may be an ear tag, collar, or bee strip.

What is described is use of a polymeric solubilizer for increasing the soil mobility of a sparingly soluble insecticide, said polymeric solubilizer having the property that the active insecticidal ingredient in a 1% by weight aqueous solution of the polymeric solubilizer at 25° C. and 1.01325 bar has a solubility at least forty times higher than under the same conditions in pure water, and wherein the active ingredient:solubilizer weight ratio is ≦1.

What is described is use of a polymeric solubilizer for increasing the soil mobility of a sparingly soluble insecticide, said polymeric solubilizer having the property that the active insecticidal ingredient in a 1% by weight aqueous solution of the polymeric solubilizer at 25° C. and 1.01325 bar has a solubility at least forty times higher than under the same conditions in pure water, and wherein the active ingredient:solubilizer weight ratio is ≦1.

Self-assembly is defined as the ability of an active ingredient (AI), when mixed with a polymer or polymers (solid or liquid state), to form either a complex or a strong attraction with the polymer/polymers, which influences the controlled release of the total system. This AI-polymer interaction or strong attraction can form in the solid state or in solution. The AI-polymer interaction also can form when applied to a filter paper, soil, seeds, or plant vegetation substrates, where the AI and polymer self-assembles into an AI-polymer-substrate matrix or complex that influences how the AI releases from the complex or matrix in a controlled manner.

Self-assembly is defined as the ability of an active ingredient (AI), when mixed with a polymer or polymers (solid or liquid state), to form either a complex or a strong attraction with the polymer/polymers, which influences the controlled release of the total system. This AI-polymer interaction or strong attraction can form in the solid state or in solution. The AI-polymer interaction also can form when applied to a filter paper, soil, seeds, or plant vegetation substrates, where the AI and polymer self-assembles into an AI-polymer-substrate matrix or complex that influences how the AI releases from the complex or matrix in a controlled manner.

Use of particles in controlling a population of arthropod pests, wherein the particles comprise i) a hydrophobic exterior that adheres to the cuticle of at least one species of an arthropod pest; and ii) at least one pesticide associated with the said particles, wherein the pesticide is present at a weight of no more than 2% of the weight of the particles, populations of particles, methods of producing populations of particles and methods of application of such populations.

Use of particles in controlling a population of arthropod pests, wherein the particles comprise i) a hydrophobic exterior that adheres to the cuticle of at least one species of an arthropod pest; and ii) at least one pesticide associated with the said particles, wherein the pesticide is present at a weight of no more than 2% of the weight of the particles, populations of particles, methods of producing populations of particles and methods of application of such populations.

Use of particles in controlling a population of arthropod pests, wherein the particles comprise i) a hydrophobic exterior that adheres to the cuticle of at least one species of an arthropod pest; and ii) at least one pesticide associated with the said particles, wherein the pesticide is present at a weight of no more than 2% of the weight of the particles, populations of particles, methods of producing populations of particles and methods of application of such populations.

A pesticidal composition comprises a synergistically effective amount of an organophosphate-based acetylcholinesterase (AChE) inhibitor compound and a pesticide selected from N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-((3,3,3-trifluoropropyl)thio)propanamide (I), N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-((3,3,3-trifluoropropyl)sulfinyl)propanamide (II), or any agriculturally acceptable salt thereof. A method of controlling pests comprises applying the pesticidal composition near a population of pests. A method of protecting a plant from infestation and attack by insects comprises contacting the plant with the synergistic pesticidal composition. ##STR00001##

A pesticidal composition comprises a synergistically effective amount of an organophosphate-based acetylcholinesterase (AChE) inhibitor compound and a pesticide selected from N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-((3,3,3-trifluoropropyl)thio)propanamide (I), N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-((3,3,3-trifluoropropyl)sulfinyl)propanamide (II), or any agriculturally acceptable salt thereof. A method of controlling pests comprises applying the pesticidal composition near a population of pests. A method of protecting a plant from infestation and attack by insects comprises contacting the plant with the synergistic pesticidal composition. ##STR00001##