It's Tick Season! - Whole Dog Journal
Mar 24, 2020·My dogs are border collies, 19.4 kg and I ordered 10-20kg doses. We have been tick free since application. I did apply two doses – one in June and one 4 weeks later July and it is still workng. We are in the Fall now and any ticks I find on them are dead. Next year I will reduce the application – use the up to 10 kg dose and monitor.