What Is a Tick?

What a tick is

A tick is a tiny parasite that lives by drinking blood: flat and small before it feeds, then swollen like a bean after several days attached. Ticks are arachnids, like spiders and mites, rather than insects, which is why larvae have six legs while nymphs and adults have eight ³.

Ticks find a host by sensing breath, body odor, heat, moisture and vibration. They wait on grass and shrubs with front legs held out, a pose called questing, and grab on as you pass ¹. Getting ready to feed takes about 10 minutes to 2 hours, depending on the tick ¹.

Germs pass to the host in the tick’s saliva, and a tick picks up a germ from one host and can pass it on at its next meal ¹, which is why the life cycle and the stage you meet matter so much.

How a tick’s life cycle works

Most ticks feed on a different host at each stage, and the blacklegged tick is the best-studied example.

1. Egg. Adult females lay their eggs on the ground, and after laying them they die ³.
2. Larva. Six-legged larvae feed once, often on mice and other small animals, where they can pick up germs ³⁴.
3. Nymph. After molting, eight-legged nymphs feed again, and in the East they are most active April through July ⁴.
4. Adult. Adults feed on larger animals such as deer and are most active in early spring and fall ⁴.

For the blacklegged tick, the full cycle takes about two years, while the brown dog tick is an exception: it feeds on the same kind of host, dogs, at every stage ³.

Main U.S. ticks, where they live and what they spread

Worked example: an after-hike routine

This is an example routine built from CDC steps for someone returning from a walk in tall grass, and the times shown are CDC’s.

Check pets and backpacks too, because ticks ride indoors on them ⁶.

Where you will meet ticks

• Wooded and brushy areas with tall grass and leaf litter are where most people pick up ticks ⁶.
• Lawn edges where the grass meets the woods hold ticks close to the house ⁶.
• On pets after walks, and indoors where pets sleep (brown dog ticks can live their whole cycle around dogs) ³.
• On your skin in warm, hidden spots: armpits, behind knees, hairline, waist ⁶.
• On a pest control quote as a “tick and flea yard treatment” or part of a mosquito and tick program, so ask which areas are treated and how often.

What lowers your risk most

The biggest wins are simple habits: repellents, treated clothing, showers within two hours and full-body checks, all drawn from CDC guidance ⁶. Fast removal matters, because Lyme bacteria usually need more than 24 hours of attachment ⁴.

At home, yard changes help, and CDC suggests clearing leaf litter and brush, mowing often and placing a 3-foot-wide strip of wood chips or gravel between lawn and woods ⁶. These steps are a form of non-chemical pest control.

Limits of tick control

• CDC says pesticides can reduce ticks in treated areas but should not be relied on alone ⁶.
• Ticks ride in on deer, rodents and pets, so a treated yard can be reached again within weeks.
• Nymphs are so small that many bites go unnoticed until a rash or fever appears ⁴.
• CDC advises against testing a removed tick, since results cannot reliably guide treatment ⁷.

What drives the cost of tick control

We do not publish prices, because the cost of a yard tick program depends on the size of the treated edges, how many visits run through the season, whether it is bundled with mosquito work, and how much brush clearing or fencing is needed.

Landscape work is often a one-time cost that keeps paying off, while sprays need repeating. Our mosquito and yard treatment estimator shows how visit counts change the total, and the cost guide explains plan pricing.

How a yard tick program works

A good program starts with the landscape and then targets the places where ticks live.

1. Inspect lawn edges, woodlines, stone walls, leaf litter and pet areas to find where ticks gather.
2. Change the habitat: clear leaves and brush, mow often, add a wood chip or gravel barrier ⁶.
3. Move play areas and patios away from yard edges and trees ⁶.
4. Limit wildlife: stack wood neatly to discourage rodents, fence out deer and strays ⁶.
5. Targeted treatment of edges by a licensed applicator, following the label and local guidance ⁶.
6. Protect pets with a vet-advised product used exactly as labeled ⁸.

Ongoing tick upkeep

• Rake leaves in fall and spring; clear tall grass at lawn edges ⁶.
• Keep the gravel or wood chip barrier topped up so it stays wide and dry.
• Remove old furniture, mattresses and trash where ticks can hide ⁶.
• Check pets daily during tick season, especially after walks in tall grass.
• Plan yard work around the local tick season; our seasonal pest prevention page explains the timing.

Health risks and when to see a doctor

Tickborne illness often starts with fever, chills, headache, tiredness, muscle aches or a rash, and Lyme disease can also cause joint pain ¹. CDC says to see a doctor if a rash or fever develops in the weeks after a bite, and to tell them when and where you were bitten ⁷.

Tick paralysis is a rare reaction to a toxin in tick saliva, and movement usually returns within 24 hours of removing the tick ¹. Lone star ticks are linked, by growing evidence, to alpha-gal syndrome, a red meat allergy ².

Rules that apply to tick products

Skin repellents and yard tick products are pesticides regulated by the U.S. EPA, and CDC advises choosing repellents with an EPA registration number and one of these ingredients: DEET, picaridin, IR3535, oil of lemon eucalyptus (OLE), PMD or 2-undecanone. Do not use OLE or PMD on children under 3 ⁶.

Pet tick products must match the species and weight on the label; never use a dog product on a cat ⁸.

Lyme disease is a nationally notifiable condition, and CDC changed its case definition in 1996, 2008, 2011, 2017 and 2022, which affects trend counts ⁵.

Yard applicators must hold a state license; see pest control licensing and our pesticide safety guide.

Tick vs flea: how to tell them apart

Tick myths

Myth Ticks jump or drop from trees.

Reality CDC says ticks cannot fly or jump; they quest on grass and shrubs ¹.

Myth Burn it or smother it with petroleum jelly.

Reality CDC warns these can force infected fluid into the skin ⁷.

Myth Every tick carries Lyme.

Reality Only blacklegged ticks spread Lyme; other ticks carry other diseases ⁴.

Myth Get the tick tested to know if you need treatment.

Reality CDC advises against testing; results cannot reliably guide treatment ⁷.

Myth Spraying the yard is enough.

Reality CDC says not to rely on pesticides alone ⁶.

Your region decides your tick risk

When it matters to you, and what to do next

If you live near woods in a Lyme area, build the after-outdoor routine into your week and fix the yard edges. If your family or pets keep finding ticks after yard changes, a licensed company can add targeted edge treatment, and if a bite is followed by rash or fever, see a doctor first.

Our flea and tick treatment service page covers what a yard program includes.

Related terms

Mosquito

A mosquito is a small, long-legged fly whose females bite people and animals for the blood they need to make eggs, and whose young grow only in standing water, from a pond to a bottle cap.

Pest Identification

Pest identification is the step of naming exactly which insect, rodent or other animal is causing a problem, down to the species when it matters, so the right control method can be chosen.

Perimeter Pest Treatment

A perimeter pest treatment is an application of a labeled insecticide to the outside of a building, usually the lower foundation wall and the soil or plants right next to it, meant to kill crawling insects before they get inside.

Seasonal Pest Prevention

Seasonal pest prevention is the practice of timing pest-prevention tasks to the points in the year when each pest becomes active, breeds or moves indoors, so homeowners act just before a problem starts instead of after it shows up.

Insecticide

An insecticide is a pesticide made to kill, harm, repel or otherwise control insects, and under U.S.

Wildlife Exclusion

Wildlife exclusion is the practice of keeping wild animals such as raccoons, squirrels, skunks, opossums and bats out of a building by removing them without harm, often through a one-way door, and then sealing, screening or capping every opening they could use.

Pest Life Cycle

A pest life cycle is the series of stages a pest passes through from egg or birth to a breeding adult, such as egg, larva, pupa and adult for a mosquito, or egg, nymph and adult for a cockroach.

Also referenced from: Seasonal Pest Prevention