Table 3.

Analysis of acaricidal efficacy (Rhipicephalus sanguineus) based on geometric means

4-h assessments				24-h assessments
Day	Control mean	Treated dogs Mean (Efficacy %)	p-value	Day	Control mean	Treated dogs (Efficacy %)	p-value
Day 2	32.7	1.6 (95.1 %)	<.0001	Day 3	27.9	0.0 (100.0 %)	<.0001
Day 7	33.8	0.1 (99.7 %)	<.0001	Day 8	30.2	0.0 (100.0 %)	<.0001
Day 14	33.5	1.5 (95.6 %)	<.0001	Day 15	29.3	0.0 (100.0 %)	<.0001
Day 21	32.7	1.7 (94.7 %)	<.0001	Day 22	32.5	0.4 (98.9 %)	<.0001
Day 28	34.4	9.8 (71.4 %)	<.0001	Day 29	30.9	0.7 (97.7 %)	<.0001

Group 1: Negative control

Group 2: Dogs were treated with Frontline Tri-Act®