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Old March 31st, 2012, 09:48 AM
Hazmat Hazmat is offline
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Join Date: Mar 2008
Posts: 138
I believe frontline can be applied as often as every two weeks. Application time may have to be increased if the cat is sleeping and hunting in a flea infested environment. Frontline and similar products usually kill fleas withing 12-24 hours but new fleas are always jumping on.
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