Since moving to the countryside in March our cats have had fleas (never had them in the city). I've been using Frontline Combo on them but this has only been effective for exactly 3 weeks this last occasion. I've now seen flea dirt on the white cat (I've been checking almost daily just in case!).
Is it usual for Frontline Combo to only last this long as it is summer and peak flea-season or could it be losing it's effectiveness? We live in very close proximity to a number of free-roaming ducks and hens and the cats do spend a lot of the day hunting shrews in the nearby hedges so I'm guessing they are probably getting them from there.
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Frontline Combo 'only' lasting 3 weeks before more fleas....
21 replies
mejon · 29/08/2009 09:40
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