Some over the counter flea collars are very dangerous. I remember Hartz, in particular, has been known as a collar that has caused severe problems, even deaths, in some cats. Google for more info.
it's safer and more effective to use Advantage or Frontline for
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Thanks, I'll let my daughter do the research.
-CHAYA-
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09/18/2010 postreply
18:53:22
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我也正想说这个呢!非常同意!
-tryonetry-
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09/18/2010 postreply
23:07:33