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Review title: It no longer works
Product review: I used it for a few years but alas, probably because the fleas acquire resistance, it no longer works. I've switched to Advantix and it does. Of course, I'm concerned, societally, that as with antibiotics, it's an endless battle. I hope we keep developing effective (and safe!) flea controls and antibiotics, but it's hard to remain optimistic that we always will. Of course, the world may well have ended before then--for example, some terrorist scientist creating a highly communicable mutated smallpox virus that he released in a public place.
