Western Black-Legged Tick — Not a Service We Sell

We do not treat for ticks

That is the verdict at the top of this page and it is worth putting in plain words before anything else.

Sasquatch does not sell tick control. There is no tick program here, no yard spray package, and no perimeter service aimed at this animal. If a company has told you that a treatment around your house is how you deal with ticks in Whatcom County, we would want you to hear a second opinion before you spend anything on it.

The reason is not squeamishness about the work. It is that the exposure this species actually produces happens away from the treated ground. You meet a western black-legged tick on a brushy edge, in tall grass along a fence line, or brushing past vegetation on the side of a trail. A product applied to a lawn does not follow you to Chuckanut or up Galbraith, and a household that believes it is covered because the yard was sprayed is worse off than one that checks itself after a walk.

So this profile does what the library is for. It tells you what the animal is, where you genuinely encounter it here, what the risk realistically looks like in this corner of the state, and how to take one off correctly. Where you need authority beyond that, the Washington State Department of Health is the source we cite throughout, and it is where we would send you.

What the animal is

Ixodes pacificus is a hard tick and an arachnid rather than an insect — eight-legged as a nymph and adult, related to spiders and mites, as Washington State University’s veterinary hospital puts it.

Washington’s Department of Health describes the western black-legged tick as mainly found in western Washington, with populations also present along the eastern slopes of the Cascades, inhabiting forested, oak savannah or brushy areas. That places us squarely inside its range: this is the Ixodes of the wet side of the mountains, and the tick most likely to be found on somebody who walks in Whatcom County.

Size is the thing people get wrong. An unfed adult female is roughly the size of a sesame seed, dark, with a reddish-brown body behind a darker shield. Adult males are smaller and darker overall. A nymph is smaller again — around the size of a poppy seed — and it is the nymph that matters most for disease transmission in this genus, precisely because it is small enough to go unnoticed for the days required.

A fed female is a completely different object. Engorged, she swells to something like a small pale grape or a bean, gray-green rather than red-brown, and people frequently do not recognize the two as the same animal. A great many “what is this” photographs are engorged females.

Which tick you are looking at, and why it matters

Washington’s Department of Health illustrates four species that commonly bite people here, and the distinctions are useful because the geography and the diseases differ.

The western black-legged tick is the western Washington one, in forest, oak savannah and brush, and it is the species associated with Lyme disease and anaplasmosis in this state.

The western dog tick is described as primarily an eastern and parts of southwest Washington animal, in woodland, medium grasses, shrubs and sunny woodland edges, with adults on dogs and immatures on rodents and rabbits.

The Rocky Mountain wood tick, Dermacentor andersoni, is primarily an eastern Washington species in woodland habitat, with a life cycle the state describes as taking up to two to three years.

The soft tick, Ornithodoros hermsi, is a different creature entirely and is worth knowing about because the exposure route is peculiar. The state ties it to tick-borne relapsing fever and to sleeping in rustic, rodent-infested cabins in mountainous areas. It feeds briefly at night rather than attaching for days, so people are often bitten without ever finding a tick.

For somebody in Bellingham or Ferndale, the practical implication is that the Rocky Mountain spotted fever material dominating national tick content is largely about ticks that live on the other side of the Cascades. Washington’s own data records zero to three Rocky Mountain spotted fever cases identified in the state, with most of those infected elsewhere.

Where you actually meet one here

Habitat is the most useful thing on this page after the removal instructions, because it tells you when to do a tick check and when not to bother.

CDC’s surveillance guidance describes Ixodes pacificus as primarily a woodland-associated tick, found in forested settings including their edges and particularly along trails. Within that, the stages separate: nymphs sit in leaf litter and on rocks, logs, tree trunks and fallen branches, while adults are found on the tips of grasses and shrubs. Washington’s health department gives the same picture from the other direction — grassy, brushy or wooded areas, tall grass and leaf litter, with some species questing from the edge of low-lying vegetation.

Questing is the behavior worth picturing. A tick climbs a stem to a height that suits the host it is waiting for, holds its front legs out, and waits for something to brush past. It does not drop from trees, it does not jump, and it does not fly. It has to be touched.

That is why the encounter is so specific to where the vegetation touches you. The narrow part of a trail where salmonberry and thimbleberry lean in. The deer trail through a greenbelt. The fence line on a rural property where nobody has cut for several seasons. The unmown margin where a pasture meets timber. Sitting on a log at a lunch stop.

And it is why a mown lawn in open sun is a poor place to look for one. It is hot and dry at the surface, it has no leaf litter, and it offers nothing to quest from. Ticks are not absent from residential property in this county — a brush-choked back corner against a greenbelt is habitat. But the pattern is an edge, not a lawn, and a household that understands that will spend its attention in the right place.

The season runs backwards from what you expect

Most people carry a mental model of ticks as a hot-weather problem. For this species that model is wrong in a way that matters locally.

CDC’s surveillance summary gives adult Ixodes pacificus as active mainly during the cool months of the year, from late fall to early spring. Nymphs are the warm-season stage, host-seeking typically in May and June depending on location, and larvae that hatch do not seek hosts actively until the following spring.

Put that against a Whatcom County winter and the implication is direct: our climate does not produce a hard freeze that shuts anything down. A February hike in the Chuckanuts on one of the mild bright days that follow a wet week is squarely within adult activity. Somebody who does tick checks in July and never in January is checking during the smaller of the two exposures.

Washington’s health department describes ticks as most active in spring and summer when they feed, and both statements are true — they describe different stages. The state’s spotted fever reporting, which runs April to October with a June and July peak, tracks the eastern Washington Dermacentor season rather than this one.

The life cycle, which takes years

Ixodes pacificus runs through egg, larva, nymph and adult, and takes a blood meal from a different host at each of the three feeding stages. The whole cycle occupies several years rather than a season, and each stage feeds once.

CDC’s guidance names the hosts. Larvae and nymphs feed on lizards, squirrels and ground-dwelling birds, and on other mammals and deer. Adults come most commonly from deer, and from other medium-sized and large mammals.

Two consequences follow that are worth holding.

The first is that a tick can only acquire a pathogen from a host that carries one, and the small hosts that feed the immature stages are not equally competent at carrying anything. That is a large part of why western infection rates in this genus run lower than the figures published from the northeastern states, and why importing a Connecticut risk estimate into a Washington conversation produces a misleading answer.

The second is that a long, slow, multi-year cycle across wild hosts is not something a property treatment interrupts. The animal is produced by the landscape, and it arrives on you rather than emerging from your ground.

The honest version of the Lyme risk here

This is the part of the page most worth reading carefully, because the public conversation about Lyme runs to both extremes and neither is accurate for Washington.

Washington’s Department of Health states that the western black-legged tick is the species that spreads Lyme disease in this state, and that those ticks are primarily found in western Washington with a presence on the eastern slopes of the Cascades. So the vector is here. That much is not in question.

The state also publishes the case numbers, and they are the figures that put it in proportion. Each year ten to forty Lyme disease cases are reported among Washington residents, and most result from exposures outside the state. Only zero to seven confirmed cases per year are reported as acquired within Washington.

Both halves of that deserve saying plainly.

It is not zero. Locally acquired Lyme disease does occur in Washington, in single digits, and somebody who spends a great deal of time in brush on this side of the mountains is the person it happens to. Telling that person there is no Lyme here would be false and would cost them a diagnosis.

And it is not the northeastern picture. A tick bite acquired on a Whatcom County trail is not the same probabilistic event as a tick bite acquired in Connecticut, and the difference is large enough that it should change how worried somebody is while still leaving them careful.

On what to watch for, the state describes early illness as fever, chills, headache, fatigue, muscle and joint aches and swollen lymph nodes, with the bull’s-eye rash occurring in seventy to eighty percent of infected people and typically appearing three to thirty days after the bite. The rash is common but not universal, so its absence does not settle anything. That conversation belongs with a physician, and it goes better if you can say when you were bitten and where you had been.

The other things carried here

Washington’s health department lists the tick-borne diseases known to be acquired in this state: anaplasmosis, babesiosis, Lyme disease, Rocky Mountain spotted fever, tick-borne relapsing fever, tick paralysis and tularemia.

Anaplasmosis is the other one attached to this species in Washington, typically transmitted by an infected black-legged tick.

Rocky Mountain spotted fever comes from American dog ticks and Rocky Mountain wood ticks, which the state describes as common in eastern Washington, and most Washington cases involve infection elsewhere.

Tick-borne relapsing fever is the soft tick and the rustic cabin.

Tick paralysis is the unusual one and it is worth knowing because it is mechanical rather than infectious. A toxin in tick saliva produces ascending weakness, and the state notes paralysis usually begins after the tick has fed for four to seven days, with prompt removal usually leading to complete recovery. A child who becomes unsteady on their feet after a camping trip is a situation in which somebody should be looking through hair for a tick.

Tularemia is confirmed in both Washington people and Washington ticks, and it is rare.

Removing a tick, correctly

Washington’s Department of Health gives the method, and it is short enough that there is no excuse for improvising.

Use fine-tipped tweezers. Not fingers — the state advises against removing a tick with bare hands. Not a tick key you do not know how to use, if fine-tipped tweezers are within reach.

Grasp the tick as close to the skin surface as possible. You are aiming at the mouthparts and the head, not at the body. Squeezing the swollen body is what you are trying to avoid.

Pull upward with steady, even pressure. Straight out, slowly, and keep pulling. The skin will tent up before it releases. That is normal and it takes longer than people expect.

Do not twist and do not jerk. The state is explicit that this is what causes the mouthparts to break off.

Then clean the bite area and your hands with rubbing alcohol or soap and water.

If mouthparts do break off, the sensible course is to leave the skin alone rather than digging at it, and to keep an eye on the site. Digging causes more tissue damage than the fragment does.

Sooner is better than later at every point in this. A tick attached for a short time has had less opportunity to transmit anything than one attached for days, which is the whole argument for doing a check the same evening rather than discovering something on the third morning.

What not to do, and why

The folk remedies are not merely useless. Washington’s health department warns that hot matches, and coating the tick’s body with petroleum jelly, soap or nail polish, may cause it to release additional saliva, and that increases the chance of transmitting disease.

That mechanism is worth understanding, because it reframes the whole category. The idea behind smothering or burning a tick is to make it back out on its own. What it actually does is stress an animal whose saliva is the delivery route for anything it is carrying, while leaving it attached and salivating for longer than a pair of tweezers would have taken.

So: no petroleum jelly. No nail polish. No dish soap on a cotton ball. No lit match, no cigarette, no hot needle. No twisting it counterclockwise, which is a persistent piece of internet advice with nothing behind it. And no waiting to see whether it drops off.

Keeping the tick is reasonable. Washington State University’s veterinary hospital suggests preserving a tick in alcohol so it can help with diagnosis if illness follows, and the same logic applies to a person: a tick in a sealed bag with the date written on it is more useful to a physician than a recollection.

What people bring us that is not a tick

A fair share of the photographs we get sent under this heading are something else, and the misidentifications run in a consistent set.

Engorged ticks are the ones people fail to recognize as ticks at all, because a fed female looks nothing like the flat dark thing in the reference photographs. Smooth, pale, bean-shaped, with legs that look far too small for the body.

Scale insects and plant galls picked up off a coat or a dog after a walk through brush. They sit still, they are the right size, and they are firmly attached to whatever they were on.

Ordinary spiders and mites get sent in when they are small, dark and eight-legged, which is a description that fits a great deal.

Skin tags, moles and blood blisters account for more calls than anybody expects. The giveaway is legs, and the absence of them settles it.

Fleas and bed bugs. Neither has eight legs and neither embeds, but a person who has found something on their skin does not always start from taxonomy.

A tick that is attached is embedded head-first and does not come off with a brush of the hand. A tick that is not attached walks, slowly and deliberately, and has all eight legs forward of the middle of its body. Those two observations sort most of the confusion.

Recording a bite, and what to tell a doctor

Because the diagnosis is clinical and the window matters, a small amount of record keeping is worth more here than it is with most things in this library.

Write down the date the tick was found and, as best you can, where you had been in the preceding days — not the town, but the terrain. Brushy trail, unmown pasture edge, camping, a rural fence line. Photograph the tick before you remove it if that is practical, and keep it afterward in a sealed bag or a little alcohol with the date on it.

Photograph the bite site as it changes over the following weeks. The state’s description of the rash as appearing three to thirty days after the bite means that a mark showing up a fortnight later is not too late to be relevant, and a dated sequence is far better evidence than a memory.

Then, if illness follows, say the word tick early in the conversation. A physician in western Washington sees very few locally acquired cases, which is a consequence of the numbers above rather than a criticism, and the history you supply is the thing that puts the possibility on the table.

Prevention that is worth the effort

The measures that reduce exposure are behavioral, and they are cheap.

Walk in the middle of a trail rather than along the vegetated edge, because the edge is where the questing happens.

Wear light-colored clothing, which makes a dark tick visible against it, and tuck trousers into socks on a brushy walk. It looks ridiculous and it works.

Repellents belong on the label rather than in our advice, so read the product and follow it. Clothing treatments and skin repellents are different products with different instructions, and the difference matters.

Do a tick check the same day, and do it properly: hairline and scalp, behind and in the ears, the back of the neck, armpits, waistband, groin, behind the knees. Nymphs are poppy-seed sized and they go where clothing is tight and skin is thin. A shower within a couple of hours helps, partly because unattached ticks wash off and partly because it is when people actually look.

Put the clothes from a brushy walk through a hot dryer cycle. Dry heat is effective on ticks and it takes no thought.

Property, pets and what actually helps

If your land includes a brushy margin, the honest advice is habitat rather than chemistry. Keeping grass cut where people and animals walk, clearing leaf litter away from the areas that get used, cutting back the vegetation that leans over a path, and maintaining a clear separation between the mown area and the wooded edge all reduce contact with the places ticks quest from. None of that is a treatment and none of it is something you buy from us.

For dogs, Washington State University’s veterinary hospital gives the sensible version: talk to a veterinarian about preventatives, and check the animal after time in cover — around the neck, in and behind the ears, in the leg folds and between the toes. Cats accumulate them on the face and neck. What goes on an animal is a veterinary decision and we do not make it.

Why this page exists at all

A pest control company that will sell you a treatment for anything you are worried about is not a company doing you a service. Ticks are the clearest example we have.

The demand is real, the anxiety is real, and there are products that could be applied to a yard and invoiced. What there is not is a good argument that doing so addresses the exposure, because the exposure is on the trail, at the fence line and in the brush, and it comes home attached to a person or a dog.

The old tick service address on this site no longer resolves to a product. It sends you to the pest library and from there to this entry, because the honest destination for that search is an accurate description of the animal and the state health department’s guidance rather than a quote form.

If what you have found turns out not to be a tick — and a great many are engorged ticks, but a fair number are ordinary spiders, scale insects on a coat, or a cat flea somebody has never seen up close — call and describe it. Identification is free, we will tell you what it is, and if the answer is that nobody needs to treat anything, that is what you will hear.