The present embodiments relate to a method for reducing or preventing attacks from marine woodborers on wood in marine environment by impregnating the wood with a composition comprising medetomidine, or an enantiomer, salt or base thereof.

Compounds of the Formula(I) wherein the substituents are as defined in claim 1. Furthermore, the present invention relates to agrochemical compositions which comprise compounds of formula (I), to preparation of these compositions, and to the use of the compounds or compositions 10 in agriculture or horticulture for combating, preventing or controlling animal pests, including arthropods and in particular insects, moluscs, nematodes or representatives of the order Acarina. ##STR00001##

Compounds of the Formula(I) wherein the substituents are as defined in claim 1. Furthermore, the present invention relates to agrochemical compositions which comprise compounds of formula (I), to preparation of these compositions, and to the use of the compounds or compositions 10 in agriculture or horticulture for combating, preventing or controlling animal pests, including arthropods and in particular insects, moluscs, nematodes or representatives of the order Acarina. ##STR00001##

Disclosed are compounds of Formula 1, including all geometric and stereoisomers, N-oxides, and salts thereof,

##STR00001##

wherein Q is

##STR00002## and R.sup.1, R.sup.2, R.sup.3, R.sup.10, R.sup.11, R.sup.12, A.sup.1 and A.sup.2 are as defined in the disclosure.

Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling an invertebrate pest comprising contacting the invertebrate pest or its environment with a biologically effective amount of a compound or a composition of the disclosure.

Disclosed are compounds of Formula 1, including all geometric and stereoisomers, N-oxides, and salts thereof,

##STR00001##

wherein Q is

##STR00002## and R.sup.1, R.sup.2, R.sup.3, R.sup.10, R.sup.11, R.sup.12, A.sup.1 and A.sup.2 are as defined in the disclosure.

Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling an invertebrate pest comprising contacting the invertebrate pest or its environment with a biologically effective amount of a compound or a composition of the disclosure.