Compositions and methods are provided for attracting stink bugs (e.g., Halyomorpha halys). The compositions include at least one pheromone and at least one synergist. The synergist/attractant is preferably at least one of an alkyl or alkenyl ester of (2E,4Z)-decadienoic acid such as ethyl (2E,4Z)-decadienoate； an alkyl or alkenyl ester of (2Z,4E)-decadienoic acid such as ethyl (2Z,4E)- decadienoate； an alkyl or alkenyl ester of (2E,4E)-decadienoic acid such as ethyl (2E,4E)-decadienoate； an alkyl or alkenyl ester of (2E,4E,6Z)-decatrienoic acid such as ethyl (2E,4E, 6Z)-decatrienoate； and any stereoisomers thereof, and any combinations thereof. The pheromone is preferably murgantiol. This disclosure provides traps containing the composition for attracting stink bugs, and methods for attracting, capturing, killing or sterilizing stink bugs using the composition.
