Patent ID: 8632795

Claim:
A device in the form of a container made of a permeable plastic material which is exclusively an uncolored vinyl acetate/ethylene copolymer, which container comprises at least two sealed chambers, each of which comprises a liquid pheromone comprising 2-ethyl-1,6-dioxaspiro[4,4]nonane, methyl 2,4-decadienecarboxylate and at least one alcohol selected from the group consisting of 2-methylbut-3-en-2-ol and 2-methylbut-3-yn-2-ol, the liquid pheromone being completely enclosed within the interior of each chamber, where at least 70% of the area of the walls forming the chambers have a wall thickness in the range of from 0.1 to 1 mm and the plastic material which forms the chambers is an uncoated, uncolored vinyl acetate/ethylene copolymer with a vinyl acetate content in the range of from 10 to 17% by weight, where the ratio of the area of the walls forming the chambers to the internal volume of the chamber is in the range of from 1 to 10 cm −1 .