Table 3.

Percent acaricidal efficacy of the new combination of fipronil and permethrin at 48 h post-infestation against D. reticulatus on dogs

	Mean number of live ticks counted on dog		Acaricidal efficacy (%)
Infestation day	Untreated control group (10 dogs)	Treated group (10 dogs)
1	32.5	0.1	99.6
7	35.9	0.0	100.0
14	34.7	0.0	100.0
21	33.7	0.0	100.0
28	31.2	0.1	99.5

Number of ticks differed statistically significantly between treatment groups (p < 0.002).