Table 2.
Geometric mean number of fleas (Ctenocephalides felis) per dog and the percent efficacy based on geometric mean flea counts for groups treated with either CS, DPP, FM or IP days 0, 30, 60 and 90 of the study
Geometric mean number of fleas/doga | % Efficacy | |||||||
---|---|---|---|---|---|---|---|---|
Study day | Days since last treatmentb | CS | DPP | FM | IP | DPP | FM | IP |
−11 | NA | 67.4 | 67.5 | 68.4 | 69.0 | NA | NA | NA |
15 | 15 | 76.3 | 1.1* | 0.3* | 1.1* | 98.6 | 99.7 | 98.6 |
56 | 26 | 74.5 | 1.3* | 0.7* | 1.6* | 98.3 | 99.1 | 97.9 |
75 | 15 | 81.6 | 0.1* | 0.0* | 0′0* | 99.9 | 100 | 100 |
116 | 26 | 76.2 | 0.2* | 0.5* | 0.9* | 99.8 | 99.4 | 98.9 |
154 | 64 | 76.4 | 6.3* | 1.2* | 8.4* | 91.7 | 98.4 | 89.1 |
CS control solution, DPP dinotefuran, pyriproxifen and permethrin, FM fipronil and (S)-methoprene, IP imidacloprid and permethrin, NA not applicable
*Geometric mean flea counts significantly different from the CS group (p < 0.01)
aEight dogs in each group, flea counts conducted 24 h post-infestation
bLast or the most recent treatment