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Table 1 Geometric tick counts and percent efficacy of fipronil/(S)-methoprene/cyphenothrin against Ixodes scapularis 6 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 27.7 (21–42) 1.9 (0–14) 93.2 %
Day 7 23.0 (13–32) 0.3 (0–1) 98.9 %
Day 14 22.5 (12–34) 0.4 (0–3) 98.2 %
Day 21 29.7 (22–42) 1.2 (0–5) 95.9 %
Day 28 25.7 (17–32) 0.3 (0–1) 98.9 %