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Abstract

Disclosed is a method of repelling noxious insects comprising the step of exposing said noxious insects to a composition containing from 0.1 to 90 wt. %, based on the total weight of the composition, of at least one of 2-(1-hydroxyalkyl)cycloalkanones represented by the following formula 11: 1 wherein n is an integer of 3-10, R.sub.1 is hydrogen or a straight-chain saturated hydrocarbon radical having 1-6 carbon atoms; R.sub.2 is hydrogen or methyl group and R.sub.m' represents m' of the same or different, straight-chain or branched, saturated or unsaturated, hydrocarbon radicals R which, as a substituent group, can be bonded to carbocyclic atoms; m' is an integer of 0-8, provided that m' should be at least 2 when n is at least 4 and both the R.sup.1 and R.sup.2 are alkyl groups; the sum of the carbon atoms of R.sub.m' does not exceed 12; and, further, when n is 4, R may be an isopropylidene group which intramolecularly bridges between the third and sixth carbocyclic atoms.

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First Claim