These Replacement Lures Are Designed For Using With The Innovative Raspberry Beetle Trap, Which Doubles As A Monitoring Kit, To Detect The Early Signs Of Raspberry Beetle By Placing It 1m Above Ground, 4-6 Weeks Before First Flower During April To July. The Raspberry Beetle Trap Helps To Improve The Timing & Efficiency Of Spray Treatment, Thereby Reducing Crop Damage Or Any Unnecessary Spray Application. attracted By The Incorporated Attractant Lure & Colour Of The Cross Vanes (simulating A Giant Raspberry Flower), The Beetles Fly Into The Cross Vane, Fall Into The Funnel-shaped Catchment Area & Down Into The Holding Bucket Below. If You Discover 5-10 Beetles Per Trap Per Week In The Period From Beetle Emergence Until Onset Of First Flowering Then We Would Suggest Using A Suitable Insect Killer Spray. The Attractant Lure In The Raspberry Beetle Trap Lasts 6 Weeks, The Length Of A Normal Raspberry Seasonraspberry Beetle Trap Detects The Early Warning Signs Of Raspberry Beetlehelps Improve The Timing & Efficiency Of Spray Treatmenthelps Reduce Crop Damage & Unnecessary Spray Applicationbeetles Are Attracted To The Lure & Colourattractant Lure Lasts Approx 6 Weeksapply An Insect Killer Spray If Numbers Of Trapped Beetles Indicates A Problem