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Table 8 Efficacy of imidacloprid 10%/flumethrin 4.5% collars against Ixodes ricinus and Ixodes scapularis 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 (%)
Tick species Ixodes ricinus Ixodes scapularis
Day −2 40 ticks (20♂ 20♀) 40 ticks (20♂ 20♀)
Day −1 50 ticks (both sexes)
Day 2 (therapeutic efficacy) 76.7 89.9 96.4
Day 7 100 100 100
Week 4 100 100 100
Week 8 100 100 100
Week 12 100 100 100
Week 16 100 100 100
Week 20 100 100 100
Week 24 100 100 100
Week 28 100 100 100
Week 32 100 100 100
Week 34 100 100 100