Formulations for control and repellency of biting arthropods

Abstract

This disclosure relates to a method for the control or repellency of biting arthropods. The method comprises bringing the biting arthropods into contact with a biting arthropod repellent formulation. The biting arthropod repellent formulation comprises nootkatone in combination, or in synergistic combination, with skin or plant derived compounds and compounds structurally similar to them (e.g., ketones, cyclic ketones, esters, gamma or delta lactones, and branched and / or unsaturated carboxylic acids), and / or one or more repellents selected from the group consisting of DEET®, para-menthane-3,8-diol (PMD), Picaridin, ethyl 3-[acetyl(butyl)amino]propanoate (IR3535), and other nitrogen-containing repellents including amines, amides, and nitrogen-containing heterocyclic compounds. This disclosure also relates to a biting arthropod repellent formulation comprising nootkatone in combination, or in synergistic combination, with the skin or plant derived compounds and compounds structurally similar to them, and / or the one or more repellents.

Description

RELATED APPLICATION[0001]This application claims the benefit of U.S. Patent Application Ser. No. 62 / 451,444, filed Jan. 27, 2017, which is incorporated herein by reference in its entirety.BACKGROUND OF THE DISCLOSURE1. Field of the Disclosure[0002]This disclosure relates to repellent formulations of compounds used as agents to control and repel biting arthropods, and especially ticks, mosquitoes and bed bugs. Also, this disclosure relates to repellent formulations of compounds used synergistically as agents to control and repel biting arthropods, and especially ticks, mosquitoes and bed bugs.2. Description of the Related Art[0003]Many mammals, including humans, have suffered the action of mosquitoes and other biting insects. The blood sucking of mosquitoes results in an itching sensation and often a rash. Also, many mosquitoes cause potentially life-threatening illness. Aedes aegypti can transmit dengue fever, yellow fever, and Zika virus, Anopheles quadrimaculatus can transmit mala...

AI Technical Summary

Benefits of technology

The patent text describes a combination of nootkatone and other repellants that work better together than alone. The combination can contain nootkatone and one or more of several compounds such as N,N-Diethyl-3-methylbenzamide, para-menthane-3,8-diol (PMD), Picaridin, ethyl 3-[acetyl(butyl)amino)propanoate (IR3535), and other nitrogen-containing repellents including amines, amides, and nitrogen-containing heterocyclic compounds. This combination produces a greater effect than using each ingredient separately.

Problems solved by technology

The blood sucking of mosquitoes results in an itching sensation and often a rash.

Also, many mosquitoes cause potentially life-threatening illness.

DEET®, namely N,N-Diethyl-3-methylbenzamide, is widely used against biting arthropods and insects, but is characterized by an unseemly bad smell, is not particularly long lasting in its effect and it dissolves plastics.

Moreover, several safety questions have been raised concerning the use of DEET® and some governments have restricted the amount of the active component that may be employed in formulations.

This itself presents a further problem since the efficacy of DEET® declines over time and therefore it needs to be formulated at higher than effective dosages in order to maintain its effectiveness.

Other repellents, such as para-menthane-3,8-diol (PMD), are relatively expensive.

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