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Table 13 Efficacy of Imidacloprid 10%/flumethrin 4.5% collars against fleas and ticks on dogs regularly shampooed or immersed in water

From: Efficacy of an imidacloprid/flumethrin collar against fleas, ticks, mites and lice on dogs

Study Day or Week Activity and efficacy (%)
Flea or tick species Ctenocephalides felis felis Rhipicephalus sanguineus Dermacentor variabilis
Day-1 100 fleas 50 ticks (mixed sexes) N/A
Day 0 Collars fitted to dogs in treated groups
Day 2 100 100 55.8 83.1 N/A
Day 5 50 ticks (mixed sexes)
Day 7 100 100 98.4 97.8 99.5 97.8
Treatment shampoo immersion shampoo immersion shampoo immersion
Day 21, Efficacy Day 28 100 100 99.8 99.4
Day 21 Efficacy Day 35 100 99
Day 49, Efficacy Day 56 100 100 99.2 100
Day 49 Efficacy Day 63 99.7 100
Day 77, Efficacy Day 84 99.3 99.6 98 97.8
Day 77, Efficay Day 91 98.6 100
Day 105, Efficacy Day 112 97 96.3 97.8 97.3
Day 105, Efficay Day 119 100 100
Day 133, Efficacy Day 140 93.7 91.1 94.1 95.6
Day 133, Efficay Day 147 100 95.4
Day 161, Efficacy Day 168 98.3 87.1 95.9 95
Day 161, Efficacy Day 175 98.8 97.3
Day 189, Efficacy Day 196 93.9 67.8 95.4 96.1
Day 189, Efficacy Day 203 100 94.4
Day 217, Efficacy Day 224 90.1 50.3 94.7 89.1
Day 217, Efficay Day 231 97.6 94.4
  1. From Day 28 and onwards dogs were infested one week later with R. sanguineus than they were infested with C. felis felis or D. variabilis.
  2. = Dogs were shampooed or immersed in water one week before each re-infestation with C. felis and D. variabilis and this translated into two weeks before each re-infestation with R. sanguineus.