Tick protection without chemicals – for the whole family.
Eoka Tick Protection uses ultrasound to deter ticks – no sprays, no odor, nothing on your skin. Clip the device to your backpack, belt, or your dog's harness and get on with your day.
Perfect for woodland walks, hiking, gardening, and outdoor life all tick season long.
Three kids who basically live at the soccer fields = tick checks every single night 😅 Now there's a clip on every backpack. We still check, obviously, but haven't found one attached since the Fourth of July. Got the Family Pack so Grandma has one too ❤️
Hangs off the carabiner on my pack strap, shoulder height. Three weekend section hikes on the Appalachian Trail in Pennsylvania: zero ticks on me, two on my buddy who went without. Anecdotal, sure — but I ordered him one the same night anyway.
ok this thing is way smaller than i expected?? weighs nothing and you literally forget it's there. had it clipped to my shorts all week at the lake house, no bites and i don't have to slather myself in spray anymore. 10/10
Spotted this one crawling up my shin after the morning walk — it hadn't latched on. On a normal morning in the tall grass by the creek I'll pull off five or six. I'm not claiming it's magic. But the clip's coming on the next walk too.
Our evening routine after the woods: clothes off, lint roller over the pants, check the kids. Eoka has become an extra layer on top of that — not instead of it. Three weeks in, the routine has turned up exactly zero ticks. Happy for that to continue.
Two weeks camping our way through the Adirondacks with stops at every grassy site imaginable. The clips lived on the picnic table the whole vacation and came along on every single hike. Not one of us got a tick — last year the same trip ended with five. Coincidence? Maybe. But they're coming again next year 😄
Evening loops with the dog on the rail-trail. The little indicator light means I can see it's running at dusk — otherwise you'd never know it's there. The dog doesn't react at all — and I've stopped picking ticks out of my socks after the walk.
Went with the white one so I can spot it in my pack right away. It rode on my backpack through two days of rain on the Long Trail in Vermont and it's still running on the same charge. Charging with the same cable as your phone is an underrated detail.
Honestly, I was skeptical — ultrasound, right. I'm an engineer; I want data. But after an entire May in the backyard without a single tick (versus roughly ten last year), I'm happy to stay skeptical with the clip on. I can't prove a thing. I'm also not testing without it.
Bought the eight-pack for our cabin in Vermont. The grandkids each have one on their backpacks, one hangs on the dog's harness, and the rest are waiting for guests. Easy to clip on and nothing sticky — a grandmother appreciates that. Delivery came in two days, too.
One on my jacket and one on the dog's harness — he can't hear it at all, which was the thing I worried about. We're in tall grass every day and it's been quiet all spring. So nice to skip the chemicals in his fur.
Sits in my shoelaces on trail runs. Doesn't show, doesn't rattle, weighs nothing. Four weeks, zero ticks. Only request: make a pink one so my girlfriend stops stealing mine.
Excellent little gadget. Four stars only because my wife claimed it before I'd even gotten the plastic off, so I had to order a two-pack. No complaints about the technology — the household allocation is another matter.
I was disappointed at first — the thing doesn't make a sound?? Called my son, who explained that that's the whole point of ultrasound, that you're not supposed to hear it. Well then. I suppose it's working exactly as it should. It lives on my gardening hat now.
Why it's needed
You can't feel it and you can barely see it — and it's waiting in the grass from early spring to late fall. The CDC estimates that close to half a million Americans are diagnosed and treated for Lyme disease every year — and in Europe, ticks also spread TBE, a virus with no cure.
Caught late, Lyme can mean months of treatment — the only easy tick bite is the one that never happens.
And the map keeps growing. What used to be a Connecticut problem now runs across the Northeast and Upper Midwest — Pennsylvania, Wisconsin, Minnesota — with deer ticks turning up in backyards and on trails far beyond.
The old ways
Reapplying repellent on the kids every two hours. Sticky bottles in the bag. That smell that won't quit. And all of it washes off in the first swim. Repellents do their job — a few hours at a time.
Eoka takes the other road: clip it on once and it works for days. Nothing on your skin. Nothing to remember.
The technology
Eoka continuously emits ultrasonic pulses across a wide spectrum, 9–21 kHz — designed to jam Haller's organ, the sensory organ a tick uses to detect carbon dioxide, warmth, and movement while hunting for a host. The same kind of ultrasonic technology has long been used in tick protection for pets across Europe.
A simplified simulation of the disruption zone. Without Eoka, ticks home in on warmth and carbon dioxide — see what happens when you turn it on.
I worked countless nights to build protection that doesn't require slathering our kids in chemicals.
Why Eoka exists
When my daughter was nine, a tick bite turned into Lyme disease — right in the middle of a perfectly ordinary summer. We'd done everything you're supposed to do: repellent, long sleeves, tick checks every night. It wasn't enough — and by the time we caught it, the bacteria had a head start.
Those months changed everything. I'm an engineer, and I couldn't shake the thought that the protection we were rubbing onto our kids was a chemical that washed off in the first swim. So I started working nights — with frequencies instead of bottles.
Eighteen months and countless prototypes later, Eoka is the protection I wish we'd had that summer: inaudible, chemical-free, and built for families who live outside.
Our journey
Every step tested where the ticks actually are.
Daniel's daughter, nine years old, gets Lyme disease from a tick bite. That same summer, the question is born: why does tick protection have to mean chemicals?
Nights at the kitchen table with research papers, signal generators, and the first circuit boards. The goal: jam Haller's organ — inaudibly to humans.
37 prototypes are worn through a full tick season — on trails, in backyards, and on dog walks. The 9–21 kHz frequency range is dialed in.
A hundred families test Eoka in the field. Battery life, attachments, and charging get refined over real summers.
11 grams, USB-C, and 2–4 days of runtime. Finished after 18 intense months — built for families who live outside.
From our workbench — the clip in development
Where do you usually pick up ticks? That's exactly where Eoka is most at home.
Soccer practice, fort building, berry picking — clip it to the backpack and go.
A clip on the harness instead of chemicals in the fur.
Lighter than your keys — rides on the strap all weekend.
No app, no settings — one button.
1–2 hours via USB-C — the same cable as most phones. Lasts 2–4 days.
Belt, waistband, backpack strap, or the dog's harness — closer to the body works best.
The indicator light shows it's running. Then just head outside — it handles the rest.
These figures describe the tick situation in the US and Europe (sources: CDC Lyme disease surveillance estimates and European TBE statistics) — not the product's performance.
Straight answers — even to the hard question.
Eoka emits a wide ultrasonic spectrum (9–21 kHz) designed to jam the sensory organs a tick uses to find a host. The research on ultrasound is mixed, and we never promise 100% protection — no honest method does. Think of Eoka as an extra layer in your tick routine, as a complement to (not a replacement for) your regular tick checks. That's exactly why you always get 30-day returns: test it wherever you usually pick up ticks and judge for yourself.
Yes. Nothing is sprayed, absorbed, or inhaled — Eoka never touches the skin and contains no active substances. The frequency sits above typical human hearing, and the device is calibrated to be imperceptible even to dogs and cats. The whole family can use it.
Repellents go on your skin, need reapplying after a few hours, and vanish in the first swim or wash. Eoka clips on once — then works for 2–4 days per charge. No sticky mess, no smell, nothing on your skin. Many people use both: the clip every day, repellent as backup on high-risk outings.
Eoka is personal protection. It's made to be worn close to the body — on your belt, waistband, or backpack strap — creating a disruption zone around the wearer. Plan on one device per person (plus one on the dog's harness), rather than one for the whole group. That's why it comes in family packs.
2–4 days of continuous operation per charge, depending on temperature. A full charge takes 1–2 hours with the included USB-C cable — the same connector as most phones. Automatic sleep mode preserves the battery between outings.
Eoka was developed and calibrated specifically for ticks. Some customers report an effect on other crawling insects too, but that's not something we promise. Against mosquitoes, we still recommend regular bug spray.
You have 30 days from the day of delivery. Test Eoka in your everyday life — the backyard, the dog walk, the trail. Want to return it? Reach out and we'll send you a prepaid return label; your money is refunded within 3–5 business days of us receiving the return. Everything is also backed by a 1-year warranty.
178 protected adventures
From dog walks, trails, and cabin weekends across the US. Click the photos to see them full size.
Three kids who basically live at the soccer fields = tick checks every single night 😅 Now there's a clip on every backpack. We still check, obviously, but haven't found one attached since the Fourth of July. Got the Family Pack so Grandma has one too ❤️
Hangs off the carabiner on my pack strap, shoulder height. Three weekend section hikes on the Appalachian Trail in Pennsylvania: zero ticks on me, two on my buddy who went without. Anecdotal, sure — but I ordered him one the same night anyway.
ok this thing is way smaller than i expected?? weighs nothing and you literally forget it's there. had it clipped to my shorts all week at the lake house, no bites and i don't have to slather myself in spray anymore. 10/10
Spotted this one crawling up my shin after the morning walk — it hadn't latched on. On a normal morning in the tall grass by the creek I'll pull off five or six. I'm not claiming it's magic. But the clip's coming on the next walk too.
Our evening routine after the woods: clothes off, lint roller over the pants, check the kids. Eoka has become an extra layer on top of that — not instead of it. Three weeks in, the routine has turned up exactly zero ticks. Happy for that to continue.
Two weeks camping our way through the Adirondacks with stops at every grassy site imaginable. The clips lived on the picnic table the whole vacation and came along on every single hike. Not one of us got a tick — last year the same trip ended with five. Coincidence? Maybe. But they're coming again next year 😄
Evening loops with the dog on the rail-trail. The little indicator light means I can see it's running at dusk — otherwise you'd never know it's there. The dog doesn't react at all — and I've stopped picking ticks out of my socks after the walk.
Went with the white one so I can spot it in my pack right away. It rode on my backpack through two days of rain on the Long Trail in Vermont and it's still running on the same charge. Charging with the same cable as your phone is an underrated detail.
Honestly, I was skeptical — ultrasound, right. I'm an engineer; I want data. But after an entire May in the backyard without a single tick (versus roughly ten last year), I'm happy to stay skeptical with the clip on. I can't prove a thing. I'm also not testing without it.
Bought the eight-pack for our cabin in Vermont. The grandkids each have one on their backpacks, one hangs on the dog's harness, and the rest are waiting for guests. Easy to clip on and nothing sticky — a grandmother appreciates that. Delivery came in two days, too.
One on my jacket and one on the dog's harness — he can't hear it at all, which was the thing I worried about. We're in tall grass every day and it's been quiet all spring. So nice to skip the chemicals in his fur.
Sits in my shoelaces on trail runs. Doesn't show, doesn't rattle, weighs nothing. Four weeks, zero ticks. Only request: make a pink one so my girlfriend stops stealing mine.
Excellent little gadget. Four stars only because my wife claimed it before I'd even gotten the plastic off, so I had to order a two-pack. No complaints about the technology — the household allocation is another matter.
I was disappointed at first — the thing doesn't make a sound?? Called my son, who explained that that's the whole point of ultrasound, that you're not supposed to hear it. Well then. I suppose it's working exactly as it should. It lives on my gardening hat now.
