Table 3 Efficacy of imidacloprid 10%/flumethrin 4.5% collars 24 hours after each infestation of cats with Ctenocephalides felis felis
From: Efficacy of an imidacloprid/flumethrin collar against fleas and ticks on cats
Study day or week | Activity and efficacy (%) | ||||
|---|---|---|---|---|---|
Day - 1 | Each cat infested with approximately 100 fleas | No infestation | |||
Day 0 | Collars fitted to cats in treated groups | ||||
Day 2 (48h) | 100* | 100 | 100 | 100 | 100 fleas applied |
Day 3 | - | - | - | - | 90.7 |
Day 7 | 98.6 | 100 | - | 100** | |
Day 20 | - | - | 100* | 100 | - |
Week 4 | 99.5 | 100 | 99.9 | - | 99.6 |
Week 8 | 96.8 | 100 | 100 | 100 | 97.6 |
Week 12 | 98.6 | 99.8 | 99.9 | 99.7 | 97.5 |
Week 16 | 97.9 | 99.6 | 99.0 | 100 | 100 |
Week 20 | 99.3 | 97.7 | 99.5 | 100 | 100 |
Week 24 | 97.7 | 97.2 | 96.5 | 97.9 | 98.4 |
Week 28 | 96.1 | 92.1 | 97.3 | 99.2 | 96.9 |
Week 32 | 96.1* | 94.5 | 96.5 | 98.7 | - |
Week 34 | 96.6 | 89.1 | 97.2 | 91.5 | 95.5 |