Flea dirt is actually the feces of adult fleas, and it is reddish-black in color because it is made up of animal (or human) blood that isn't fully digested. If you see flea dirt but no fleas on your dog or cat buddies living in your home, you may wonder what to do.
People often mistake “flea dirt,” or flea feces, for flea eggs—though both are signs of a flea infestation. Unlike flea eggs, flea dirt is dark and crumbly. You can identify flea dirt by putting a few of the specks on a white piece of paper and adding a couple drops of water.
Adult fleas are tiny—about one-eighth-inch long, and move so quickly that they're hard to spot. But flea dirt shows up as tiny black spots against the skin, so it's possible to find flea dirt even if you never see an actual flea.
Flea droppings typically appear as small, dark, and granular particles that vary in size from about a speck of dust to a small grain of sand. They are usually dark brown to black in color, which is a result of the digested blood they contain.
What Is Flea Dirt? "Flea dirt is actually the feces of adult fleas," Hall says. "If you find flea dirt on your pet, it means that your pet has fleas, and they only produce flea dirt after they've been on your pet long enough to consume a blood meal (via biting) and digest that meal."
To rid your home of flea dirt, you'll want to vacuum and wash everything that your dog may have spent time on. This means vacuuming and washing all floors, furniture, dog beds, pillows, and blankets. Detergents and surface disinfectants should be used as you normally would to clean these items.
"Flea dirt should be washed off the pet with a thorough bath and for severely affected pets, two or three rounds of shampooing may be necessary," Hall says. "A flea comb (a small fine-toothed comb) can also be used to tease the dirt and live fleas out of the hair."
Is Flea Dirt Dangerous? Well, sort of, because it's a big red flag alerting you to a greater problem: the flea treatment you've been using on your dog or cat isn't working properly. "Fleas carry many, many potential diseases which will induce illness in cats, dogs, and humans," Hall says.
If you suspect fleas, the easiest way to check is to take a damp white cloth or piece of paper and brush the infected area. If flea dirt is present, the little black fleck-like pieces will stain the cloth or paper in red. This redness appears because flea dirt is made of animal blood that's not fully digested.
After hatching from an egg, fleas enter their larval stage. Larvae are free moving and feed on blood and flea feces (poop; also called “flea dirt”), in order to continue their development. Within 5-20 days of feeding on flea dirt, the larvae will spin a cocoon, and enter the pupa stage.
First, if flea dirt is present on your dog or cat, it's a strong indication that your pet is hosting one or more live fleas that have laid eggs. One of the primary functions of flea dirt is to feed flea larvae, so they can develop into adult fleas that will reproduce and continue the life cycle.
It can be challenging to visually distinguish dead flea eggs from live ones without the aid of a microscope or magnifying glass. Dead flea eggs, like live ones, may still have a smooth, shiny surface and appear translucent.
Dead flea eggs closely resemble live flea eggs in terms of their physical appearance. They typically maintain their small size, oval shape, and white or off-white color even after they have died.
Mopping and steam cleaning can help to kill flea eggs, and washing linens, bedding, and pet beds in the washing machine on the hot cycle is also advisable. If possible, declutter your home so it's easier to clean and there are fewer places for flea eggs to hide.
At What Temperature and How Quickly Do Fleas Die? Adult fleas die at temperatures colder than 46.4°F (8°C) and hotter than 95°F (35°C). Immature fleas, which refers to both flea eggs and larvae, are slightly more susceptible to the cold, dying at temperatures below 55.4°F (13°C).
Fleas poop when they feed. This poop (also called flea dirt) contains the bacteria, which can be rubbed into the bite wound or other wounds and cause an infection. People can also breathe in infected flea dirt or rub it into their eyes. These bacteria do not spread from person to person.
It looks like specks of black pepper on your furniture, carpets, and clothing. If you suspect fleas, the easiest way to check is to take a damp white cloth or piece of paper and brush the infected area. If flea dirt is present, the little black fleck-like pieces will stain the cloth or paper in red.
Flea dirt is dark, even appearing black in some cases, and looks like small flecks or clumps, Dr. Howe says. Although it can be found on any part of your pet, it's most often seen around their rears and bellies.
What is the difference between flea dirt and flea larvae?
Larva - When they hatch from eggs, flea larvae look like tiny worms about 2-5 mm long with a whitish body and pale colored hairs. They feed primarily on flea dirt, which is the blood-filled feces that adult fleas excrete after taking a blood meal.
After hatching from an egg, fleas enter their larval stage. Larvae are free moving and feed on blood and flea feces (poop; also called “flea dirt”), in order to continue their development. Within 5-20 days of feeding on flea dirt, the larvae will spin a cocoon, and enter the pupa stage.
Feline acne and flea dirt have one thing in common: they both present as small, black specks. However, they are symptoms of two very different conditions. Although the reasons for feline acne can vary between cats, it's a skin condition that affects many cats, often in response to: Environmental allergens and irritants.
You can get fleas in your hair, but they won't stay and live there. Human hair isn't thick enough to provide shelter for fleas, and most species of flea don't even feed on humans, anyway. If a flea jumps onto you from one of your pets, it will probably leave in search of better shelter.
