Pyriprol dræber lopper inden for 24 timer og flåter (Ixodes ricinus, Rhipicephalus sanguineus, Dermacentor reticulatus, Ixodes scapularis, Dermacentor variabilis, Amblyomma americanum) inden for 48 timer.
Pyriprole kills fleas within 24 hours and ticks (Ixodes ricinus, Rhipicephalus sanguineus, Dermacentor reticulatus, Ixodes scapularis, Dermacentor variabilis, Amblyomma americanum) within 48 hours post-exposure.