Table 9 Efficacy of imidacloprid 10%/flumethrin 4.5% collars against Dermacentor reticulatus and Dermacentor variabilis on dogs 48 h after each infestation
From: Efficacy of an imidacloprid/flumethrin collar against fleas, ticks, mites and lice on dogs
Study Day or Week | Activity and efficacy (%) | ||
|---|---|---|---|
Tick species | Dermacentor reticulatus | Dermacentor variabilis | |
Day −2 | 50 ticks (25♂ 25♀) | – | – |
Day −1 | – | 50 ticks (25♂ 25♀) | 50 ticks (both sexes) |
Day 0 | Collars fitted to treated group | ||
Day 2 (therapeutic efficacy) | 66.1 | 69.7 | 69.1 |
Day 7 | 99.5 | – | – |
Week 2 | – | – | 99.7 |
Week 4 | 100 | 99.1 | – |
Week 8 | 100 | 97.4 | 99.7 |
Week 12 | 99.7 | 98.7 | 98.5 |
Week 16 | 98.3 | 92.3 | 99.2 |
Week 20 | 97.2 | 97.5 | 94.4 |
Week 24 | 98.6 | 97.6 | 93.2 |
Week 28 | – | 98.5 | 92.6 |
Week 32 | – | 97.2 | 96.5 |
Week 34 | – | 96.4 | 90.1 |