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Table 1 Geometric mean adult flea counts and percent efficacy relative to non-treated controls for cats treated with a 19.5% w/v indoxacarb topical spot-on

From: Efficacy of indoxacarb applied to cats against the adult cat flea, Ctenocephalides felis, flea eggs and adult flea emergence

Study day Mean # of Fleas1,2
  Non-treated controls3 Indoxacarb3
3 27.2 a 0.0 b (100.0)4
10 19.3 a 0.0 b (100.0)
17 25.6 a 0.0 b (100.0)
24 28.0 a 0.0 b (100.0)
31 24.7 a 0.0 b (100.0)
38 25.7 a 0.1 b (99.6)
45 20.8 a 0.1 b (99.6)
  1. 1 Each cat was infested with 50 adult Ctenocephalides felis from the KS1 strain on days -2, 7, 14, 21, 28, 35 & 42.
  2. 2Geometric mean # of fleas recovered from cats per treatment group.
  3. 3Each of 8 cats in the control group received no treatment. Each of 8 cats in the 19.5% w/v indoxacarb group were administered the topical spot-on according to label directions on Day 0.
  4. 4% efficacy = ((geometric mean live adult flea count control-geometric mean live adult flea count treatment)/geometric mean live adult flea count control) × 100.
  5. a, b geometric means across rows with unlike letter superscripts are significantly different (P < 0.001).