Ticks in the House and How They Got There

Ticks in the house were carried in. Ticks cannot fly or jump, so nearly every tick you find indoors rode through the door on a dog, a cat or somebody’s clothes. Only one kind, the brown dog tick, can go on to breed inside. Pest Me Off’s inspections across Collin County start by confirming tick or flea, because the two need different plans. Then we follow the tick back to where it climbed on, usually a shaded pet run, a fence line, a tall grass edge or the leaf litter under a deck.

How Do Ticks Get in the House?

Ticks get in the house on a host. They cannot fly or jump and they look for a warm body, not a way indoors, so nearly every tick inside rode through the door on a dog, a cat or a person. The CDC says ticks wait on grass and shrub tips until a host brushes past.

A tick finds that host by breath and body odor, body heat, moisture and vibration, and the CDC adds that some species can even recognize a shadow. So if you are wondering how ticks are getting in the house, look for what is carrying them: a pet, a person or wildlife passing close to the walls.

How it gets in	Why that route works	What stops it
On the dog or the cat	The route we find most often on inspections. The tick attaches during the walk through grass, brush or wooded edges, and is not noticed until the animal is lying on a rug. American dog ticks and lone star ticks both take dogs readily	A tick check every time the pet comes in, ears and between the toes included, plus whatever your vet prescribes
On your own clothes	A tick that climbs on and does not reach skin straight away holds on to fabric instead. Pants legs, socks and jacket cuffs after yard work or a trail walk	10 minutes in a dryer on high heat. Cold and medium wash water do not kill ticks, so the dryer is the step that matters
Wildlife crossing the yard	Deer, raccoons and possums move through and ticks drop off them near the fence line and foundation, then climb the nearest grass or post and wait	Treating the yard edges and keeping tall grass, brush and leaf litter off the boundary and away from the house

A tick found indoors almost always came in by one of these three routes.

Apartments follow the same rule with one addition. A shared stairwell, a shared lawn and a neighbor’s dog put ticks closer to your door than a detached house would, but the tick still needs a ride to get through it. If you rent, tell the property manager when you find one, because the shared lawn and the common areas are theirs to treat.

Can Ticks Fly or Jump Into Your House?

Ticks cannot fly or jump, according to the CDC. A tick that turns up on an ankle was already waiting at that height on a grass stem or a fence rail, and it crossed over when you or the dog brushed the spot. A tick found high on a wall walked there after it was carried in.

Lone star ticks are the closest thing to an exception, and only outdoors. The University of Kentucky guide to ticks and disease calls them active questers that will chase a host across the ground rather than wait on a grass blade. That makes them quicker to reach you in the yard. It does not get them through a door. They still cannot fly or jump, and they still need a dog or a person to carry them inside.

Can Ticks Infest a House?

Ticks can infest a house, but only one kind. Lone star, American dog and blacklegged ticks dry out indoors, so one carried in will not become a population. The brown dog tick can live its entire life indoors, says the University of Kentucky, so a house with ticks breeding inside almost always has a brown dog tick problem.

The brown dog tick feeds on dogs at every stage of its life, and Texas A&M’s Tick App page on the brown dog tick says it is often seen inside homes literally crawling up the walls. A single infested dog can seed a house. Once the brown dog tick is established, the signs are easy to read. Ticks on door frames are the usual giveaway, because this tick climbs up from where the dog rests and hides in the cracks.

• Ticks in the cracks around window and door frames.
• Ticks behind baseboards and in gaps in the wall.
• Ticks concentrated where the dog sleeps, in and under the bed, crate or blanket.
• Ticks climbing walls upward, often toward the ceiling line, the habit the Tick App page describes.

Treating the dog alone will not end a brown dog tick problem. The dog is the food supply, but the population lives in the structure, so the structure has to be treated alongside whatever the veterinarian prescribes. Our brown dog tick guide covers the species in more detail.

Why Do You Keep Finding Ticks in the House?

Ticks you keep finding in the house come from one of two places. Single ticks days apart, each after a walk or yard work, mean the population is in the yard. Ticks with no outdoor trip to explain them, around door frames or the dog’s bed, point at brown dog ticks living inside. Work out which before spending money.

When the ticks follow time outside, the yard is where treatment belongs, aimed at the fence line, the tall grass borders, the brush and leaf litter, and the strip where the lawn meets the house. That is where ticks wait, and cutting the number waiting there cuts what comes indoors.

When they turn up with no outdoor trip to explain them, that needs an inspection rather than a guess, so call us before treating anything yourself.

Either way, check the dog and the kids as soon as they come in, because a tick does not start feeding the moment it climbs on.

The Ticks Found in Collin County Homes

Three outdoor species account for nearly every tick found on people and pets in McKinney, Allen, Frisco and Plano, plus the brown dog tick covered above. The lone star tick is the one we find most often, the American dog tick strongly prefers dogs, and the blacklegged tick is the Lyme disease carrier.

• Lone star tick. The one we find most often. It bites people at every stage of its life, not only as an adult. On a dog, check the head, the ears and between the toes, pull any you find the same way as from a person (the steps are below), and tell your vet about the bite.
• American dog tick. Bigger than the lone star tick, brown with pale mottled markings on the back. It strongly prefers dogs, and it can carry Rocky Mountain spotted fever.
• Blacklegged tick. The Lyme disease carrier, sometimes called the deer tick. Present in Texas, but we find it far less often than the lone star tick. The CDC’s page on how Lyme disease spreads says a tick generally has to be attached for more than 24 hours before it can pass on the Lyme bacterium, so prompt removal matters.
• Brown dog tick. The one that lives indoors, on dogs, in the cracks of the house itself.

What a Lone Star Tick Looks Like

A lone star tick is reddish brown, and the adult female has one white dot on her back. Kentucky’s guide says the male has smaller white marks along the rear edge of his back instead, and that the mouthparts are long.

Kentucky also says the adults and the older young are active from March through September, with the smallest young out later in summer and fall. Our lone star tick guide covers the species in more detail.

Lone Star Tick Bites and the Red Meat Allergy

A lone star tick bite can carry disease. Kentucky’s tick guide lists ehrlichiosis, Rocky Mountain spotted fever, tularemia, southern tick-associated rash illness and the red meat allergy among what this tick can pass on. It is not the Lyme disease carrier, which is the blacklegged tick, and Kentucky notes that most tick-borne diseases respond to early treatment with an antibiotic. Anyone worried about a bite should ask a doctor.

The red meat allergy is called alpha-gal syndrome. The CDC’s page on alpha-gal syndrome says that in the United States it is most often associated with the lone star tick. It is an allergy to a sugar called alpha-gal, found in red meat such as beef, pork, lamb, venison and rabbit, and in some people in dairy products and some medicines.

The reaction is easy to miss because it is delayed. Kentucky’s guide says it usually comes 3 to 6 hours after eating beef, pork or lamb. The same University of Kentucky guide says the antibody behind it has been found in up to 20% of people tested where the lone star tick is common. The same CDC page counts more than 110,000 suspected cases identified between 2010 and 2022. Symptoms range from hives and stomach upset to severe reactions that need emergency care, and the condition is managed with a doctor or an allergist.

The CDC’s advice is that the best prevention is avoiding tick bites. That means repellent on skin, permethrin-treated clothing for time in brush, a tick check every time you come in, and a yard without the shaded, grassy edges ticks wait in.

What to Do When You Find a Tick Inside

One tick on a person or a pet is not an infestation, and the first job is removal rather than treatment. The CDC’s page on what to do after a tick bite says to use fine-tipped tweezers, grasp the tick as close to the skin as you can, and pull upward with steady, even pressure, without twisting or jerking. It also says not to use petroleum jelly, heat, nail polish or anything else to make the tick let go.

Clean the bite with soap and water, rubbing alcohol or hand sanitizer, and get rid of the tick by sealing it in a bag or container or flushing it, never by crushing it between your fingers. If a rash or fever develops in the following weeks, see a doctor and mention the bite and when it happened.

Then work out where the tick came from. Check the dog properly, including the ears and between the toes. Put the clothes from that outing through the dryer as described above. Look at the door frames and the dog’s bed for the brown dog tick signs described above.

If ticks keep appearing, the source is either the yard or the structure, and professional flea and tick control is how you find out which without guessing. Get a free estimate and we will inspect both, treat the places ticks actually wait, and tell you plainly which of the two problems you have.

Before You Book Tick Treatment

Pets stay off treated areas until the treatment has dried and for as long as the product label says. We use EPA-registered products, time the yard treatment with whatever your vet is using on the pet, and tell you when the treated areas are dry and the dog can go back out.