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Table 7 Efficacy of imidacloprid 10%/flumethrin 4.5% collars against Rhipicephalus sanguineus 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 (%)
Day −2 50 ticks (25♂ 25♀) 50 ticks (25♂ 25♀)
Day −1 50 ticks (25♂ 25♀) 50 ticks (both sexes)
Day 0 Collars fitted to dogs in treated groups
Day 2 (therapeutic efficacy) 84.8 64 46.5 32.2
Day 7 97 100 98
Week 4 100 100 98 100
Week 8 98.4 100 98.3 100
Week 12 99.7 99.6 100 99.1
Week 16 96.7 100 98.1 100
Week 20 98.5 100 99.4 100
Week 24 99.1 100 99.7 99.4
Week 28 100 96.9 96.6
Week 32 98.2 96.8 90.3
Week 35 100 99.1 93.2