
How do you use a flea comb on a cat? To use a cat flea comb effectively, start at the base of the tail and the neck, where fleas are most active. Comb in the direction of hair growth, ensuring the fine teeth reach the skin. After each pass, dip the comb into a bowl of soapy water to kill any trapped fleas. Look for "flea dirt" (black specks that turn red when wet) to confirm an infestation even if live fleas aren't visible.
Even if your cat stays strictly indoors and is on a monthly preventative, a cat flea comb is a mandatory diagnostic tool. Fleas are masters of hitchhiking on human clothing or other pets. Because cats are fastidious groomers, they often lick away evidence of fleas before you notice them. A flea comb bypasses this by reaching deep into the undercoat where parasites hide.
Not all combs are created equal. To successfully catch a flea, which is roughly the size of a pinhead, the comb must meet these criteria:
Simply brushing the top of the fur won't work. Follow these steps for a successful "flea check":

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One of the most valuable uses of a cat flea comb is identifying flea dirt.
While excellent for detection and physical removal, a comb is not a standalone solution for an infestation.