Rated 4.8/5 by 1000+ Happy Customers

Silenva™ CO & Gas Detector

Silenva™ CO & Gas Detector

CHF 65.00
CHF 65.00 CHF 129.00
Save 30% Sold out

Silenva™ is an easy-to-use CO & gas detector that shows you real-time danger levels - so you can protect your family before it's too late.

✓ Shows live gas levels in real time
✓ Detects carbon monoxide, natural gas, and propane
✓ Alerts before 30 PPM
✓ Earlier warning instead of a late-stage alarm
✓

Enjoy a 90-day money-back guarantee, with less than 1% of customers requesting a refund.

📦
Shipping
Worldwide
↩️
Try it Risk Free For
90 Days
⭐
Guaranteed High
Quality
files/smiling-mother-playing-with-her-little-daughter_171337-7999.avif

What scared me most wasn't carbon monoxide, it was realizing my old detector wouldn't warn me until levels were already high. Silenva gave me something I've been missing for years: certainty.

Sarah M.

How many do I need?

3 to 4 detectors is ideal for full home protection. Place one near the bedrooms, one near the kitchen, one near your furnace or water heater, and one on any additional floor. That way you're covered where you sleep, where you cook, and where gas appliances run.

How does it work?

Plug Silenva into any outlet. Wait 200 seconds for the sensor to calibrate. That's it. You're protected. No tools. No ladder. No complicated setup. And unlike smoke detectors, height doesn't matter for carbon monoxide it mixes evenly with air. So any outlet works. Bedroom. Kitchen. Hallway. Plug in and you're covered.

What does the readings mean?

PPM — The amount of carbon monoxide in your air. Zero means clean air. The higher the number, the more CO is present. Dewlora alarms before 30 PPM.

GAS LEL — The percentage of natural gas or propane in your air. Zero means no leak. Any number above zero means gas is leaking somewhere. Act immediately.

Humidity — The moisture level in your home. Shown as a percentage. Normal is between 30-50%. Helps you keep your air comfortable and healthy.

All three. One screen. Real numbers. No guessing.

How is this different from a standard detector?

Standard detectors show a green light. Silenva shows real numbers.

Standard detectors alarm at 70 PPM. Silenva alarms before 30 PPM.

Standard detectors only see carbon monoxide. Silenva sees carbon monoxide, natural gas, and propane.

Standard detectors use cheap grade 1 sensors. Silenva uses grade 3 sensors — faster, more accurate, longer lasting.

Standard detectors make you guess. Silenva lets you know.

View full details

What Dog Parents Are Saying

<p><strong>What Dog Parents Are Saying</strong></p>

Turns out my dog’s indoor peeing was stress-related. After using the calming collar, he became calmer and the accidents stopped. Easy to wear and worked great for us.

Maria L.

<p><strong>What Dog Parents Are Saying</strong></p>

Tried pee pads and potty training with no luck. Put on this calming collar and finally no more messes in the house.

Laura R.

<p><strong>What Dog Parents Are Saying</strong></p>

My dog used to pee on the floor from separation anxiety whenever we left. Since trying this calming collar, no more accidents.

Chiara C.

<p><strong>What Dog Parents Are Saying</strong></p>

I almost gave up because my dog wouldn’t stop stress peeing. After one week with the calming collar, the accidents completely stopped.

Carol S.

<p><strong>What Dog Parents Are Saying</strong></p>

This collar actually helped my girl. She’s terrified of thunderstorms and fireworks, but seems much calmer wearing it.

Denise H.

72.5% of dogs show signs of anxiety. Yours is telling you with pee.

A study of over 13,700 dogs found that nearly 3 in 4 display anxiety-driven behaviours. And for most owners, the first sign shows up on the floor.

Indoor peeing, marking after you've just cleaned, accidents the moment you leave. That's not a house-training failure. That's stress your dog can't put into words.

A PhD veterinarian confirms that 25–45% of dogs urinate inappropriately due to stress or anxiety, and up to 52% do so in response to unfamiliar situations like new people, loud noises, or simply being left alone.

Left unaddressed, the pattern deepens. The anxiety worsens. And the accidents get harder to stop.

What's Really Behind Your Dog's Behavior?

The peeing. The chewing. The barking. It's not defiance - it's a stress response.

Your Dog is struggling with anxiety they can't tell you about.

CalmPet™ targets the root cause, so you can stop punishing the symptoms and start solving the problem.

  • Addresses the Root Cause
    Targets the stress behind indoor peeing, chewing, and destructive behavior.

  • Calms Anxiety at the Source
    Eases whining, barking, separation distress, and nervous energy.

  • Builds Calm Confidence
    Reduces reactivity, aggression, and fear — helps your dog feel safe again.

What's Inside — And Why It Works

Canine Appeasing Pheromones

Canine Appeasing Pheromones (CAPs)

Targets the emotional centers of your dog's brain, sending a direct “you're safe” signal that lowers stress and anxiety from the inside out.

Boosts security Lessens marking Encourages play
Maternal Appeasing Pheromones

Maternal Appeasing Pheromones (MAPs)

Replicates the comforting signal a nursing mother produces. It activates your dog's deepest calming instinct — even in adulthood.

Soothes and calms Promotes bonding Eases transition
Lavender

Lavender

A natural herb used for centuries to ease restlessness.

Natural calm Digestive ease Restful sleep
Chamomile

Chamomile

Soothes nerves and eases stress in dogs.

Gentle relaxation Travel comfort Emotional balance
Lemongrass

Lemongrass

Relieves tension, creating a more relaxed environment.

Tension relief Mental focus Mood support

How CalmPet™ Works

  • Step 1: Slip It On 🐾

    CalmPet™ fits any dog — small, medium, or large. Adjust the collar around your dog's neck, trim the excess, and you're done. No training, no transition, no fight.

  • Step 2: The Pheromones Kick In 🧬

    Within an hour, CalmPet™ releases calming pheromones — the same comforting scent a mother dog produces to soothe her puppies. You can't smell them. Other pets can't detect them. But your dog's brain receives one clear message: you're safe.

  • Step 3: The Anxiety Fades 🐕

    Within days, the peeing stops. The barking softens. The chewing fades. Your dog finally feels calm — and your home finally feels like home again.

    Our customers tell it better than we do!

    Excellent

    4.8

    / 5

    based on 2 067 reviews

    "My couch survived the weekend"

    I left for a 4-hour brunch and came home expecting the usual — a puddle on the cushion, maybe a chewed pillow. Nothing. Dry couch. Calm dog. I almost cried. Two months in and we haven't had an accident since. I left for a 4-hour brunch and came home expecting the usual — a puddle on the cushion, maybe a... I left for a 4-hour brunch and came home expecting the usual — a puddle on the cushion, maybe a chewed pillow. Nothing. Dry couch. Calm dog. I almost cried. Two months in and we haven't had an accident since.

    Jessica R.

    "I finally had friends over"

    I'd been telling my best friend "next month" for almost a year because my apartment smelled like a kennel. Three weeks with this collar and I hosted dinner. Nobody asked about a dog smell. Nobody noticed. I cried in the kitchen. I'd been telling my best friend "next month" for almost a year because my apartment smelled like a kennel. Three... I'd been telling my best friend "next month" for almost a year because my apartment smelled like a kennel. Three weeks with this collar and I hosted dinner. Nobody asked about a dog smell. Nobody noticed. I cried in the kitchen.

    Mark T.

    "My landlord stopped messaging me"

    Two noise complaints in three months. I was terrified I'd lose my lease. Started using this collar and a few weeks later my landlord stopped messaging entirely. Best silence I've ever paid for. Two noise complaints in three months. I was terrified I'd lose my lease. Started using this collar and a few... Two noise complaints in three months. I was terrified I'd lose my lease. Started using this collar and a few weeks later my landlord stopped messaging entirely. Best silence I've ever paid for.

    Laura S.

    "I stopped checking the floor every time I walked in"

    That's how bad it got — I'd come home, take my shoes off, and immediately scan for puddles. Three weeks with this on and I haven't found one. I actually feel calm in my own That's how bad it got — I'd come home, take my shoes off, and immediately scan for puddles. Three weeks... That's how bad it got — I'd come home, take my shoes off, and immediately scan for puddles. Three weeks with this on and I haven't found one. I actually feel calm in my own

    Tom B.

    "Almost gave him up. So glad I didn't."

    I'm not proud to say it, but I was a week away from rehoming him. He peed on the bed three times in one weekend. This collar bought us a second chance. He's calm. He's happy. He's still mine. I'm not proud to say it, but I was a week away from rehoming him. He peed on the bed... I'm not proud to say it, but I was a week away from rehoming him. He peed on the bed three times in one weekend. This collar bought us a second chance. He's calm. He's happy. He's still mine.

    Mia K.

    You Have Questions, We Have Answers.

    I tried a pheromone diffuser and it didn't work. Why is this different?

    Here's the issue: diffusers only protect one room. The moment your dog walks into the next room, he's outside the calming zone. And anxiety doesn't stay in one room — it follows him into the bedroom, the car, the vet's office, and outside during storms.

    How long does it take to work?

    Most dogs visibly calm down within the first hour of wearing it. The anxiety-driven behaviors (peeing inside, barking, chewing) typically fade within 3-7 days, with full results in 1-2 weeks. If you don't see a difference within 90 days, send it back.

    Is this safe? My dog has sensitive skin / allergies / I have kids around.

    100% safe. The pheromones are species-specific — only your dog's nose can detect them. Humans, cats, babies, and other pets won't be affected at all. The collar material is hypoallergenic TPE, the same material used in baby products. No drugs. No fragrance. No alcohol. No side effects.

    Will it work on MY dog?

    CalmPet™ works on dogs of every breed, size, and age — from 6-week-old puppies to 15-year-old seniors. It works on rescues with past trauma. It works on dogs who've failed Prozac. It works because it doesn't rely on training or memory — it works directly with your dog's natural pheromone biology, which is the same in every dog on earth.

    I've tried other calming products and they didn't work. Why is this different?

    Most calming products fail because they're stuck in one place, only work in one moment, or rely on your dog swallowing something. CalmPet™ moves with your dog. The pheromones surround him 24/7 — at home, on walks, in the car, during storms, while you're at work. That's why it works when nothing else has.

    What happens if it doesn't work for my dog?

    Send it back within 90 days for a full refund — no questions asked, no return shipping fees, no awkward emails. We're confident enough in CalmPet™ that we'd rather lose a sale than have you stuck with something that didn't work. We get it. You've been let down before. The risk is on us, not you.

    How do I know when to replace it?

    Each collar lasts up to 30 days. The easiest way to know it's time for a new one: if you notice your dog getting restless or anxious again, swap the collar. That's your signal the pheromones have run their course.

    Will my dog still be himself? I don't want him drugged or zoned out.

    Your dog will still be 100% himself — just without the anxiety. CalmPet™ doesn't sedate. It doesn't drug. It doesn't change personality. The pheromones simply tell your dog's brain that he's safe — the same message his mother gave him as a puppy. He'll still play, still wag, still greet you at the door. He just won't panic anymore.