Fleas can easily live and thrive in a house with no pets. Fleas will bite humans and feed on human blood to survive in a pet-free home.
Fleas feeding solely on human blood can multiply and cause a flea infestation in the house.
In this guide, you’ll find what causes fleas in a house without pets, the signs of fleas, and how to eliminate fleas.
And a lot more. Keep reading.
Sources of Fleas In Homes Without Pets
Wildlife that invades homes can transfer fleas to your house. Another way fleas move into the house is by hitchhiking.
Like bed bugs, fleas can also hitch a ride on your clothes and luggage and make their way to your house.
Most raccoons, skunks, and opossums have fleas.
Flea eggs, adult fleas, and flea larvae can drop off their bodies when these flea carriers invade basements, garages, and crawl spaces.
Adult fleas are good enough to track humans to their bedrooms and living spaces. And when they do, they bite humans to feed on their blood.
You can also accidentally bring fleas to your home from a flea habitat and a flea-infested home.
In the outdoors, fleas live in grassy areas with shade and humidity.
When you’re outdoors and walk through flea habitat, fleas will latch onto your trousers, clothes, and luggage to travel to your home.
If your yard has the habitat that can harbor fleas, then fleas can live in your yard too.
Fleas in couches, carpets, and beds in a flea-infested home or hotel room can also hitch a ride by latching themselves to your belongings.
Bringing old furniture with fleas can also cause fleas in the house.
Signs of Fleas In The House Without Pets
Adult fleas, flea bites, flea dirt, flea larvae, and flea feces are the five signs of fleas in a house without pets.
You can detect that there can be fleas in your house when you’ve pets.
You see your pet scratching, and it can trigger your alarm bells that your furry friend might have transferred fleas to your home.
But the signs are challenging to notice when you don’t have any pets.
Like many ectoparasites, fleas leave behind subtle signs of their presence that can be hard to notice.
Let’s get into each of the five flea signs to figure out what they look like.
Adult fleas are tiny poppy seeds-like bugs that are 1/8 inch (1-3 mm) in size. They’re oval, reddish-brown, and they’ve six legs.
The hind legs, which are the longest, enable the fleas to jump.
Fleas are ectoparasites.
They live on the exterior of their hosts’ bodies, such as pets, to feed on their blood. Fleas solely feed on their hosts’ blood.
Flea bites appear as acne-like rashes on the skin below the knees, such as ankles, claves, and feet.
However, if fleas are in the bed, then, like bed bugs, they can bite humans on any area of the skin they can access.
Flea bite marks always appear in clusters. A flea bites multiple times before accessing a vein to have its blood meal.
Flea dirt is dry flea feces. Fleas defecate in liquid form. And when their feces dry up, they appear as black dirt particles.
Flea dirt is visible in the areas where fleas hide, such as beds, carpets, and rugs.
Pour some water on the flea dirt and scrub them to see if they turn reddish. If they do, then it’s flea dirt.
When you pour water, the flea dirt turns reddish because it contains only blood they fed.
Flea eggs appear as tiny white salt grains. They’re easy to spot on pets with fleas, especially when the fur is dark colored.
However, their eggs are difficult to spot in a home without pets. Female fleas lay eggs in the areas where they hide in the house.
You’ll find out where fleas hide in a minute. Before that, let’s find another sign of fleas – flea larvae.
At the larval stage, fleas look like tiny pale worms with a thin layer of hairy bristles on their bodies.
Flea larvae are 2-5 mm in size and primarily live where adult fleas hide.
These larvae don’t bite humans or pets. They feed on the feces of the adults.
A flea lifecycle has four stages: Eggs < flea larvae < flea pupae < and adult fleas.
Fleas egg hatch after one to ten days, depending on the temperature or humidity in the house. The warmer and more humid the house, the quicker the eggs will hatch.
Flea larvae hatch out of the eggs. They feed on the flea dirt that adult fleas leave behind for 5-20 days before they enter the pupae stage.
In the pupae stage, the flea larvae spin a cocoon. The larvae remain in the cocoon for a week before becoming an adult.
But the adult fleas can remain in the cocoon for months, waiting for the best time to come out.
The adult fleas that emerge from the cocoon survive for 100 days when they get regular access to bloodmeals.
The adult fleas immediately start to bite and feed on the blood of their host. Female fleas need blood to breed and develop eggs.
A female fertilized flea can lay 40-50 eggs daily. So, a single female flea can cause an infestation.
Hiding Places For Fleas In The House Without Pets
Beddings, mattresses, couches, carpets, and rugs are hiding places for fleas. They can also hide in the cracks of furniture and crevices on hardwood floors.
Fleas can also hide in clothes and fabric in dresser drawers and storage sections such as closets and wardrobes.
How To Get Rid Of Fleas In The House With No Pets
Vacuum clean your home daily to remove fleas, their eggs, larvae, and pupae.
You’ll also need to wash bedding in hot water and dry them in high heat to kill fleas in the bed fabric.
Fleas drown in hot soapy water, and heat kills fleas in all life cycle stages.
Temperatures greater than 95°F are deadly for fleas. That’s why steam cleaning the bed mattress, carpets, rugs, furniture, and the floor is vital to killing flea eggs, adults, larvae, and pupae.
You can refer to my guide on home products to kill fleas to know more.
However, you’ll also need to prune your yard and treat it with things like nematodes and diatomaceous earth to eliminate fleas in the yard.
Using essential oils, such as peppermint, repel fleas and wards off potential infestations.
Also, taking measures to prevent wildlife from invading homes keeps the flea problem away.
Fleas are tiny pests. And they can be extremely hard to eliminate with one treatment.
So, you’ll need to monitor the home for fleas, look for any signs of developing fleas infestation, and perform multiple treatments until no fleas are in the house.
But, do not use flea bombs to eliminate fleas. Bug bombs and fogger sprays make the infestation worse because of their limited reach and associated risks.
In any case, if you’re struggling to eliminate fleas, then please hire a pest controller.
Lifespan of Fleas In The House Without Hosts
Adult fleas can’t survive for more than two weeks without hosts like humans and pets.
However, there’s a catch.
The pre-emerged adult flea residing in the cocoon can survive for 155 days without a host. It’ll remain active and alive inside the cocoon till a host arrives.
Many new movers or tenants in an empty house can suddenly notice fleas in the house.
The previous residents didn’t eliminate the flea infestation, and the pupae remain active inside the house.
When a host arrives, the adult fleas come out of the cocoon and bite and feed.
Types of Fleas In The House With Or Without Pets
Cat and dog fleas are the two types of fleas that infest homes. The cat flea is more common than the dog flea in the US.
Dog fleas prefer dogs. But in the US, cat fleas are responsible for wreaking havoc on pets and homes.
Cat fleas are indiscriminate about their host. If you’re dealing with fleas in the house, they’re most likely cat fleas.
Dangers of Flea Bites
Flea bites cause intense itching. But flea bites can also transmit cat scratch fever and flea-borne typhus.
Their bites can trigger allergic reactions in sensitive individuals.
A home without pets is still vulnerable to flea infestation.
You can get fleas in the house from sources like home-invading wildlife and bringing in flea-infected items to your home.
Being vigilant about the flea signs and taking proactive measures to prevent an infestation are keys to ensure there are no fleas in your home.