Flea dirt is technically the fecal matter of adult fleas — so it’s just a nicer way of saying “flea poop.” When adult fleas ...

are called "flea dirt" and are flea feces (or digested blood). To check your cat for fleas or flea dirt, run a flea comb through your cat's coat or part the hair with your fingers to examine the skin.

A flea is an external parasite of dogs and cats. Fleas look like dark little ... So you’ll see flea dirt, which is the product of a flea ingesting your pet’s blood and then passing it as ...