Table 9.
Efficacy 1 and 4 h after treatment and weekly infestations (days −2, 2, 7, 14, 21 and 28) with adult Ctenocephalides felis on dogs untreated (C) or treated with a topical (DPP) or an oral (S) ectoparasiticide on day 0
| DPP 1 h | DPP 4 h | S 1 h | S 4 h | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days | AM | GM | FF | AM | GM | FF | AM | GM | FF | AM | GM | FF |
| 0 | 15.3 | 17.5 | 0/8 | 85.1 | 91.3 | 4/8 | 11.6 | 12.6 | 0/8 | 59.3 | 76.6 | 0/8 |
| 2 | 72.6 | 81.4 | 0/8 | 96.4 | 99.1 | 8/8 | 45.9 | 47.9 | 0/8 | 72.5 | 84.1 | 4/8 |
| 7 | 89.8 | 93.7 | 3/8 | 95.3 | 97.7 | 5/8 | 49.6 | 52.9 | 0/8 | 75.4 | 84.8 | 2/8 |
| 14 | 94.9 | 97.2 | 5/8 | 97.4 | 98.4 | 6/8 | 49.0 | 51.3 | 0/8 | 62.7 | 76.0 | 0/8 |
| 21 | 90.4 | 96.6 | 4/8 | 95.6 | 97.4 | 4/8 | 11.9 | 12.9 | 0/8 | 46.3 | 58.7 | 0/8 |
| 28 | 82.3 | 85.6 | 0/8 | 91.8 | 95.5 | 3/8 | 12.1 | 13.1 | 0/8 | 31.2 | 33.5 | 0/8 |
C control untreated; DPP dinotefuran, pyriproxyfen, permethrin; S spinosad; AM efficacy calculated on arithmetic mean; GM efficacy calculated on geometric mean; FF number of dogs free of live fleas