We presentthe results oftesting10pheromonedispensersused to lure the sprucebark beetle-Ipstypographus(Linnaeus, 1758).A Little Girls Shorts comparisonwas made between boththeir efficacyand also the decrease intheir efficacyafterapplication.DispensersPheagrITand ITEcolureTubusare effectivethroughout the wholeflightactivity ofI.typographus; the efficacy of ITPheagrExtra was partly similar.
The others areeffectivefor a declaredperiod ofefficacy, with the exception ofdispenserPheropraxA, which initiallyhad a very good level of catches, butsoonsubsided, and the efficacydid not reach eitherthetimeorthe efficacy ofallthe declaredshelf-life.Overall,themost effective dispenser All Over Prints was ITEcolureMegaand dispensers ITEcolureTubusandFeSexTypo showed a similar efficacy.Completelyunsuitablefor the trapping of I.typographuswere found to be combineddispensersPCHITEtokapandPCITEcolure.