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Table 2 Geometric tick counts and percent efficacy of fipronil/(S)-methoprene/cyphenothrin against Ixodes scapularis 24 hours after infestation of 50 ticks

From: Efficacy of a proprietary formulation of fipronil/(S)-methoprene/cyphenothrin against Ixodes scapularis tick infestations on dogs

Day of tick infestation/removal Geometric mean tick counts (min-max) Control Geometric mean tick counts (min-max) Treated Efficacy
Day 1/2 29.0 (18–42) 0.4 (0–6) 98.7 %
Day 7/8 28.9 (19–42) 0.3 (0–3) 99.1 %
Day 14/15 26.6 (14–43) 0.0 (0–0) 100 %
Day 21/22 15.7 (4–33) 0.0 (0–0) 100 %
Day 28/29 25.6 (16–49) 0.1 (0–1) 99.5 %