Skip to main content

Table 5 Published percentages of efficacy results of fipronil or permethrin based products against Ixodes ricinus (geometric means) [17-21]

From: Efficacy of a fixed combination of permethrin 54.5% and fipronil 6.1% (Effitix®) in dogs experimentally infested with Ixodes ricinus

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%
  1. (a): Effitix®.
  2. (b): Frontline ® Spot-on Dog Merial [17].
  3. (c): Effipro® Spot-on Virbac SA [17].
  4. (d): Imidacloprid 10% (w/v) / Permethrin 50% (w/v) Spot-on [18].
  5. (e): CertifectTM Merial Limited [21].
  6. (f): Defend® Exspot® Treatment for dogs, Schering-Plough Animal Health Corp., 65% permethrin[19].
  7. (g): Defend® Exspot® Treatment for dogs, Schering-Plough Animal Health Corp., 65% permethrin [20].