
Thousands of satisfied customers
Compact Design. Powerful Protection.
9.5 cm — Width
7 cm — Height
6 cm — Depth
Not All Pest Repellers Are Equal.
Cheap repellers use outdated tech that pests adapt to in days. Hkld USO™ uses advanced ultrasonic cycling that keeps working — month after month.
One Device. Whole-Room Protection.
The Hkld USO™ covers up to 300 sq ft per unit — just plug it into any outlet and let it protect your space around the clock. No setup, no maintenance, no ongoing costs.
- Covers up to 300 sq ft per device
- Plug in — starts working instantly
- Silent & invisible — won't disrupt your home
- 90-day money-back guarantee
Certified Safe & Effective
Tested, verified, and trusted by families worldwide.
the USA
Technology
Excellent
Pets & Kids
Frequently Asked Questions
Everything you need to know about the Hkld USO™ before you buy.
Just plug the Hkld USO™ into any standard power outlet and it starts working instantly. The moment the indicator light turns on, the device begins emitting ultrasonic waves to repel pests. No setup, no installation, no maintenance required.
Absolutely. The Hkld USO™ is 100% chemical-free and poison-free. It uses only ultrasonic sound waves to repel pests — completely safe for children, dogs, cats, and the entire family. No sprays, no toxic residues, no mess.
The Hkld USO™ is effective against a wide range of household pests:
- Rodents — rats and mice
- Crawling insects — cockroaches, ants, spiders, silverfish, bed bugs
- Flying insects — mosquitoes, bees, wasps, hornets
- Others — crickets, squirrels, and more
Each unit effectively covers up to 300 sq ft (approximately one room). We recommend placing one device in each room for full coverage.
Yes — we stand behind the Hkld USO™ with a 90-day money-back guarantee. If you're not 100% satisfied for any reason, simply contact our support team and we'll issue a full refund. No questions asked.
Still have questions? We're here to help.
Contact Our Support Team →Quiet Protection. Cleaner Peace of Mind.
Hkld is made for everyday home pest protection: plug it in, keep it running, and help protect bedrooms, kitchens, apartments, basements and guest rooms without messy sprays or traps.