Eeek! I hate ticks too.
The preventative is absorbed into the skin. I have heard of putting a few drops down the topline of the back, but I would not apply anywhere else on the body. One of the reasons to put it between the shoulder blades is so that the dog cannot lick it or ingest it.
I know with Frontline, the tick has to bite the dog before it will die. Might be the same with similar preventatives.
I have found that the best defense against ticks is daily checks. It's a lot of work with hairy dogs, and some ticks are almost microscopic.
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