Ticks are resilient arachnids. A quick rinse or dropping one into a glass of water usually does not kill it.
If you want to know how can ticks die, the most reliable methods are prolonged drying, properly applied heat, starvation, or careful physical removal and disposal.
If you find a tick on your skin, remove it promptly with fine-tipped tweezers. Fast removal lowers the time a tick bite has to transmit infections. Safe disposal prevents the tick from reaching another person or pet.
What Actually Kills Ticks
Ticks survive by conserving water and waiting for a host. Dry conditions, sustained heat, and the inability to obtain another blood meal can eventually kill them.
Ordinary water exposure does not reliably kill ticks.
Dehydration and Low Moisture
Dehydration kills many ticks in nature. Ticks need moisture from humid leaf litter and shaded vegetation.
Dry air increases water loss through their bodies. Sunlight, airflow, short grass, and removal of damp leaf litter make a yard less suitable for ticks.
Drying may take time, especially for an unfed adult tick. Do not assume a tick is dead just because it looks still.
Water does not reliably kill ticks. Some ticks remain alive during extended submersion, so flushing or leaving one in a puddle is not effective.
Heat and High Heat
Moderate warmth does not guarantee that a tick will die. Sustained high heat, such as the heat in a properly operated clothes dryer, kills ticks hidden in clothing more reliably than room-temperature air or brief warm exposure.
Do not apply high heat directly to your skin or use a flame near a tick. Burning a tick attached to you can injure your skin and may cause the tick to release fluids into the bite site.
Failure To Find a Blood Meal
Ticks need a blood meal after hatching at each active life stage. If a tick cannot find a suitable host, it may conserve energy and water for a while, then die from starvation or dehydration.
According to the CDC’s tick life-cycle guidance, many ticks die because they fail to find a host for their next feeding. The timeline varies by species, life stage, temperature, and humidity.
Why Tick Survival Varies by Species and Life Stage
A tick’s ability to survive depends on its developmental stage, body size, habitat, and preferred host. Larvae, nymphs, and adults differ in how much moisture they lose and how long they can wait between feedings.
From Six-Legged Larva to Eight-Legged Nymph
Ticks pass through four stages: egg, six-legged larva, eight-legged nymph, and adult. After hatching, each feeding stage needs blood before the tick can molt or reproduce.
Larvae are tiny and often feed in groups. Nymphs are larger than larvae but still easy to miss on skin or clothing. Adults have greater body reserves and may tolerate unfavorable conditions longer.
Hosts and Tick Lifecycles
Ticks can feed on mammals, birds, reptiles, and amphibians. Many species need a different host at each stage, which can make the life cycle take several years.
The CDC explains that ticks require a blood meal at every active stage. A missed host, unsuitable humidity, or exposure to harsh conditions can interrupt the cycle and kill the tick.
Blacklegged, Deer, American Dog, and Brown Dog Ticks
The blacklegged tick, often called the deer tick, feeds on several host types during a lifecycle that can last about two years in some regions. Its nymphs are especially difficult to spot because of their small size.
The American dog tick commonly uses mammals and may be encountered around grassy areas and trails. The brown dog tick can remain closely associated with dogs through multiple life stages and may establish indoors or in kennels.
Brown dog ticks can spread the bacteria associated with Rocky Mountain spotted fever in parts of the southwestern United States and Mexico. Species-specific habits affect which control steps work best.
Safe Ways To Remove and Dispose of a Tick
Remove an attached tick with fine-tipped tweezers, then place it in a sealed container or wrap it securely before throwing it away. For clothing, use laundering and appropriate heat rather than relying on water alone.
Removing an Attached Tick With Tweezers
- Use fine-tipped tweezers to grasp the tick as close to the skin as possible.
- Pull upward with slow, steady pressure. Do not twist or jerk.
- If mouthparts remain in the skin, remove them with tweezers if you can do so easily. Otherwise, let the skin heal rather than digging into it.
- Clean the bite area and your hands with soap and water or an alcohol-based hand sanitizer.
- Dispose of the tick in a sealed container, place it in alcohol, wrap it tightly in tape, or flush it only after it is securely contained.
Do not cover an attached tick with petroleum jelly, nail polish, or chemicals. Do not squeeze its body while it is attached.
Using Hot Water and a Washing Machine
Hot water alone may not kill a tick reliably. A washing machine cycle can remove ticks from fabric.
A dryer’s sustained heat is generally more useful for killing ticks that remain in clothing. Place potentially exposed dry clothing in a dryer on high heat before washing when the fabric permits.
Follow the garment-care label, and keep clothing away from your skin until you have checked it.
Why Burning and Crushing Are Poor Choices
Burning a tick on skin can cause a serious injury. Crushing an attached tick can increase contact with its fluids.
Crushing a loose tick may also leave it alive if the body is not destroyed completely. Use tweezers for removal and a sealed disposal method afterward.
Reducing Tick Exposure Around People, Pets, and Yards
You can lower exposure by avoiding dense vegetation, reducing humid hiding places, and checking your body and pets after outdoor activity.
Avoiding Tall Grass and Questing Ticks
Ticks often wait on grass, shrubs, and leaf edges with their front legs extended, a behavior called questing. Stay on cleared trails and avoid brushing against tall grass.
Wear long pants tucked into socks when practical. After outdoor activities, check your legs, waist, scalp, behind your knees, and other warm creases.
Inspect dogs around the ears, collar, toes, and tail. Shower and change clothes after being outdoors.
Keep grass trimmed, clear leaf litter, and place play areas away from brush and wooded edges. Improving sunlight and airflow can make the yard less favorable for ticks.
Using Permethrin Safely
Permethrin-treated clothing can kill or repel ticks that contact the fabric. Use only products labeled for clothing or outdoor gear.
Follow the application and drying instructions. Never apply clothing permethrin directly to your skin.
Keep wet-treated items away from cats and other animals until the label says they are safe. For skin, use an EPA-registered repellent according to its label.
When To Watch for Illness After a Bite
Write down the date and location of a tick bite. Monitor your health for several weeks.
Seek medical advice if you develop fever, chills, headache, unusual fatigue, muscle aches, a spreading rash, or other new symptoms.
Symptoms can vary by infection. A rash does not always appear.
Rocky Mountain spotted fever can become severe quickly. Contact a healthcare professional promptly if you feel ill after a tick bite, especially if you have a fever or your condition worsens rapidly.
