A method for deterring feeding/repelling Halyomorpha halys, said method comprising treating an object or area with a composition comprising a Halyomorpha halys deterring feeding/repelling effective amount of tridecane, E-2-decenal, (a) optionally at least one compound selected from the group consisting of isolongifolanone and isolongifolenone, and (b) at least one isolongifolenone analog having the following formula:
- wherein R1 is hydrogen, an oxygen, a C1-10 alcohol, aldehyde, alkyl, ether, or esters of said alcohol with a C1-10 saturated or unsaturated, straight or branched acid and R2 is hydrogen, an oxygen, a C1-10 alcohol, aldehyde, alkyl, ether, or esters of said alcohol with a C1-10 saturated or unsaturated, straight or branched acid;
- optionally there is a double bond between carbons 5 and 6 and R2 is hydrogen;
- and optionally a carrier or carrier material.