Hello everyone! Since I am leaving to hong kong for six weeks next month, I am giving my sheltie back to my breeder to take care of him while I'm gone. But the thing is she lives on a hill, so I am really worried about the fleas and ticks at her area. I know that Advantix is for sure stronger but I heard it loses its effectiveness after the third week, so I might have to ask her to put it on him every three weeks. And I also heard that Frontline Plus doesn't work as well as Advantix. So can I get some opinions on which one I should put on him while he's at my breeder's place? Thank you! :]
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