Natural rubber sleeve stopper 18x10 mm. It allows the regular release of most pheromones during 6 - 8 weeks at least. It is used for many species such as: Peach twig borer, Oriental fruit moth, codling moth, Grape vine moth etc.
Standard dispenser small size: natural rubber sleeve stopper 15x9 mm. It is used for Warehouse moths, Flour beetles, Granary and rice weevils.