TickGuard
TickGuard Pendant.
Outdoor protection without chemicals.
Chemical-free protection.
Simple to use.
TickGuard is a wearable ultrasonic device that produces a continuous 25–65 kHz frequency sweep — designed to help deter ticks in the surrounding area. Clip it to your belt, backpack, or pet's collar and enjoy outdoor time without chemical barriers.
TickGuard's development involved researchers with over 50 years of combined experience in tick biology and acoustic research.
I've spent fifteen seasons researching Ixodes scapularis and Amblyomma americanum across the Northeast and upper Midwest. The rolling frequency design appears to reduce the likelihood of ticks adapting to the signal — which is why we focused on this approach.
The 25–65 kHz sweep we developed is designed to interfere with the sensory mechanisms ticks use to find hosts. We tested the approach against the three species most commonly associated with Lyme disease transmission in North America — blacklegged, western blacklegged, and lone star ticks.
A 10-foot coverage area with rolling ultrasound.
The 25–65 kHz sweep continuously shifts frequency to help reduce the likelihood of ticks adapting. Ticks in this area are designed to experience disorientation and move away.
They went outside.
Ticks didn't follow.
"Three weeks of hiking in the Appalachians. Not a single tick. My kids wore theirs every day and didn't even think about it."
"I was skeptical. Completely chemical-free sounded too good. Two months later — I'm ordering a second one for my dog's walker."
"My daughter has sensitive skin — DEET was never an option. TickGuard clipped onto her backpack and we haven't worried once this summer."
"I work outdoors year-round. This thing has changed my daily routine. Clip it on, forget about it, go to work."
"Bought four — one for each of us. Camping trip in the Catskills. First time we came back without checking everyone head to toe."
"Attached it to my trail running vest. 60 miles a week through tick country and not one bite all season. Worth every dollar."
Find a single tick in sixty days. Send it back.
If TickGuard doesn't do exactly what we say it does, mail us the unit and we'll refund .
Common questions about TickGuard.
Still have questions? Write to our field team. Someone with outdoor experience will respond.
Ticks rely on sensory organs — particularly Haller's organ on their front legs — to detect hosts through vibration and sound cues. TickGuard produces a rolling ultrasonic sweep between 25 and 65 kHz that is designed to interfere with those sensory signals, making it more difficult for ticks to locate hosts. Because the frequency shifts rather than staying fixed, ticks are less likely to adapt to it over time.
Fixed-frequency ultrasonic devices have a known limitation: arthropods may adapt to a constant signal over repeated exposure, which can reduce effectiveness. TickGuard's sweep algorithm shifts the emitted frequency continuously across the 25–65 kHz band. This varying signal makes adaptation less likely — helping maintain effectiveness throughout the 3-day battery cycle.
Yes. The ultrasonic output is well below any threshold known to affect mammalian hearing — including dogs and cats, whose hearing extends higher than humans but still well below TickGuard's emission range. No chemicals, no skin contact, no ingestion risk. Field testing over several years with children over two, dogs, and cats has not revealed any reported adverse findings. As always, keep the device away from small animals like hamsters or guinea pigs, whose hearing ranges overlap more closely with the ultrasonic spectrum.
Primary testing covers Ixodes scapularis (blacklegged/deer tick), Amblyomma americanum (lone star tick), and Dermacentor variabilis (American dog tick) — species associated with a significant portion of tick-borne illness in North America. The rolling sweep also shows secondary activity against mosquitoes, though tick repellency is the primary design focus.
You won't hear a thing — human hearing typically tops out around 20 kHz, and TickGuard starts its sweep at 25 kHz. Dogs and cats can technically detect up to roughly 65 kHz, which overlaps with our upper range, but in field testing with hundreds of dogs we have not observed signs of discomfort or behavioral change. The signal is a passive environmental presence, not a sharp or pulsed noise that would startle an animal.
One full charge provides approximately 3 days of continuous ultrasonic emission. Recharging takes under 30 minutes via the included USB-C cable. An amber LED pulses when the battery drops below 20% and goes solid when fully charged. The housing is rated IPX6 — it's designed to handle rain, sweat, and water exposure without interrupting function.
Summer is moving.
So are the ticks.
Clip TickGuard on this weekend. The rolling ultrasonic frequency — so you stop thinking about ticks and start enjoying the outdoors. That's the whole point.
I run trails four mornings a week. Used to find two or three ticks a month crawling up my leg. Since TickGuard — zero. Full stop.
Bought one for my son, then three more for the whole family after the first weekend. We haven't done a tick check since June.
My hunting dog used to come back covered. Clipped a TickGuard to her harness. Forty-seven days, no ticks. I'm keeping count.
My daughter has sensitive skin — DEET was never an option. TickGuard clips to her backpack and we haven't worried once this whole summer.
Attached it to my trail running vest. 60 miles a week through tick country and not a single bite all season. Worth every dollar.
I work outside year-round in Pennsylvania. Lyme country. This thing has genuinely changed my daily routine — clip it on, go to work, stop thinking about it.
Bought four — one for each of us. Camping in the Catskills. First time in years we came back without checking everyone head to toe.
Skeptical at first. Chemical-free sounded like marketing. Two months later I'm ordering a second one for my dog walker. Completely converted.
We garden every evening. The property backs onto woods. I used to come in and check immediately. Now I just go inside. That alone is worth it.
Deer everywhere on our property in Virginia. Last summer was miserable. This summer — three TickGuards on the family and zero incidents. Zero.
I'm a pediatric nurse. Parents always ask what I use for my own kids. Now I tell them TickGuard. No chemicals, no spray, no stress.
Fly fishing in the Poconos every weekend May through October. Used to spray before every trip. Haven't touched DEET since I got this.
My husband got Lyme two years ago. We've been paranoid ever since. TickGuard didn't fix the paranoia but it did fix the problem.
Attached it to my kid's backpack on day one of summer camp. Eight weeks, no ticks, no calls home. Camp counselors asked what we used.
I've tried every repellent on the market. This is the only one I don't have to re-apply, doesn't smell, and actually works in tall grass.
We take the dog to state parks every weekend. He used to pick up ticks constantly. Clipped it to his collar and the difference was immediate.
I'm pregnant and the idea of DEET near my skin worried me. TickGuard was the only solution I felt comfortable with. Has not let me down once.
Landscaper here. I'm in tall grass and brush 40 hours a week. Before TickGuard I found ticks on me twice a month. This season — not once.
My whole book club bought one after I showed them mine at our garden meetup. We call it our "tick club" now. All five of us tick-free this summer.
I was pulling ticks off my kids after every single backyard playdate. One summer with TickGuard and I can't even remember the last time I checked.
Gave one to my dad who refuses to use any sprays. He wears it every morning walking the property. My mom says he hasn't complained about ticks once this year.
Mountain biking in Connecticut on trails that are absolute tick territory. Used to do a full body check after every ride. Now I just shower. Big deal.
We manage 12 acres in the Hudson Valley. Ticks everywhere in May and June. This is the first year we let the grandkids run in the back field without spraying them down first.
Wore it every day of a two-week camping trip in New Hampshire. Not a single tick. My hiking partner didn't have one — found four on himself. I rest my case.
Horse farm in Maryland. Between the dogs, the horses, and the kids, tick season used to be a nightmare. Three TickGuards later — completely manageable. Thank you.