The rapidity with which ticks are killed by the active ingredients of the collars and the spot-on treatment, implies that there might be significant interference with the transmission of tick-borne organisms.
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Efficacy of slow-release collar formulations of imidacloprid/flumethrin and deltamethrin and of spot-on formulations of fipronil/(s)-- methoprene, dinotefuran/pyriproxyfen/permethrin and (s) -methoprene/amitraz/fipronil against Rhipicephalus sanguineus and Ctenocephalides felis felis on dogs.
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