Table 5.
Published percentages of efficacy results of fipronil or permethrin based products against Ixodes ricinus (geometric means) [17-21]
| Active ingredient(s) | Days after treatment | |||||
|---|---|---|---|---|---|---|
| Day 2 | Day 9 | Day 16 | Day 23 | Day 30 | Day 37 | |
| Fipronil + permethrin (a) | 98% | 100% | 100% | 100% | 97% | 96% |
| Fipronil (b) | 98.8% | 100.0% | 100.0% | 100.0% | 86.3% | 77.2% |
| Fipronil (c) | 93.8% | 100.0% | 100.0% | 98.9% | 97.9% | 94.1% |
| Imidacloprid + permethrin (d) | 67.0% | 100.0% | 100.0% | 99.5% | 98.7% | 91.6% |
| Fipronil + amitraz (e) | 97.9% | 100% | 100% | 98.1% | 97.7% | 96.3% |
| Day 2 | Day 7 | Day 14 | Day 21 | Day 28 | Day 35 | |
| Permethrin (f) | 99.1% | 99.1% | 95.9% | 88.5% | 87.1% | 74.1% |
| Permethrin (g) | - | 96.3% | 99.5% | 90.7% | 90.3% | 91.3% |
(a): Effitix®.
(b): Frontline ® Spot-on Dog Merial [17].
(c): Effipro® Spot-on Virbac SA [17].
(d): Imidacloprid 10% (w/v) / Permethrin 50% (w/v) Spot-on [18].
(e): CertifectTM Merial Limited [21].
(f): Defend® Exspot® Treatment for dogs, Schering-Plough Animal Health Corp., 65% permethrin[19].
(g): Defend® Exspot® Treatment for dogs, Schering-Plough Animal Health Corp., 65% permethrin [20].