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Table 6 Geometric and arithmetic mean (standard deviation) flea counts 12 h post-treatment (Day 0) and post-reinfestations in Study 3

From: Effectiveness and residual speed of flea kill of a novel spot on formulation of spinetoram (Cheristin®) for cats

 

Day 0

Day 7

Day 14

Day 21

Day 28

Untreated Control

 Arithmetic mean

71.7 (16.4)

77.3 (9.2)

60.3 (10.4)

72.3 (15.7)

77.3 (10.8)

 Geometric mean

70.2a

76.9a

59.6a

71.0a

76.7b

Imidacloprid

 Arithmetic mean

7.2 (6.2)

10.2 (6.7)

5.8 (4.6)

7.8 (3.0)

16.8 (9.3)

 Geometric mean

4.7a,d

8.6a,d

3.9a

7.4a,d

14.8b

 % Reduction from Control

93.3

88.9

93.4

89.6

80.8

Fipronil/(S)-methoprene

 Arithmetic mean

14.8 (19.8)

4.7 (6.6)

5.3 (9.8)

6.3 (5.6)

24.7 (11.6)

 Geometric mean

5.0a,d

2.0a

2.0a

4.9a,d

21.7b

 % Reduction from Control

92.9

97.4

96.6

93.1

71.7

Spinetoram

 Arithmetic mean

22.5 (17.1)

3.5 (4.7)

3.2 (3.5)

1.2 (1.6)

13.3 (12.9)

 Geometric mean

16.4a,d

1.8a,d

2.1a

0.8a,d

8.6b

 % Reduction from Control

76.6

97.7

96.5

98.9

88.8

  1. Note: Numbers within columns with the same superscript are significantly different: Treated group comparison with control: a P < 0.01; b P < 0.05; Spinetoram comparison with imidacloprid or fipronil/(S)-methoprene: c P < 0.01; d P < 0.05