Best Ultrasonic Cat Scarer - Top Picks & Guide

Does the sound of a cat yowling outside your window keep you awake at night? Maybe you’re tired of finding unwelcome “gifts” in your flower beds. Many homeowners face the frustrating problem of neighborhood cats roaming where they shouldn’t. You want a peaceful yard, but you don’t want to harm the animals.

Choosing an ultrasonic cat scarer seems like a good solution, right? However, the market is flooded with confusing models. Some devices barely work, others scare everything *but* cats, and you worry about the noise bothering your own pets or neighbors. Finding one that is effective, safe, and reliable can feel like a guessing game, leaving you stressed and your garden still under siege.

This guide cuts through the noise. We break down exactly what makes a good ultrasonic cat scarer. You will learn which features truly matter, how to place the device correctly for maximum impact, and which popular models actually deliver results. Get ready to reclaim your garden space peacefully.

Top Ultrasonic Cat Scarer Recommendations

Bestseller No. 1

Ultrasonic Animal Repeller Outdoor Solar Ultrasonic Repellent Animal Deterrent with Motion Sensor Waterproof Deterrent Scarer Repel Cat Dog Squirrel Raccoon Skunk Rats (Green,4 Pack)

Package Includes: you will get 4 pack of solar animal repellers, solar ultrasonic animal repellent by emitting ultrasonic sound and flashing light to repel animals, can be installed in your home yard, garden, patio
Solar Power Supply: ultrasonic repellent outdoor solar panel can support 5.5V, 300AH (rechargeable), and can effectively charge the product to maintain whole day standby, just insert it into the soil with full sun to gradually repel cats, dogs, deer, squirrels, raccoon; Note: Significant effect will be seen about one week of use
Ultrasonic Technology: this ultrasonic animal repellent features the advanced ultrasonic technology, the PIR motion detection sensor starts to work, then it emits ultrasonic waves and turns on the red light to scare away the animals
Specifications Details: the ultrasonic repellent total height approx 37.5 cm/ 14.7 inch, solar panel length 15 cm/ 5.9 inch, width 8.5 cm/ 3.3 inch, working frequency 400-1000 HZ, working range around 6-8 meters
Widely Applied: the outdoor repeller ultrasonic emits sound waves frequencies make animals uncomfortable, only animals can hear, ideal for protecting lawns, flower beds, ponds, courtyard, farmland, orchards

SaleBestseller No. 2

Broox 2026 Upgraded Solar Animal Repellent, Cat Repellent Outdoor, Squirrel Repellent, Deer Repellent, Ultrasonic pest Repeller, Waterproof IP 65, Motion Detection, Dog, Raccoon, Skunk, Rabbit, Rodent

Do you have problem with unwanted animals in your area, garden, farm? Are they destroying your garden or eating the fruits? Do they bring many viruses to you? Let's start to use Broox deer Repellent to solve your problems! This effective device helps you to get rid of unwelcome animal visitors. It contains a motion detector system which detects movements and emits powerful ultrasonic sound and flashing LED light.
Repel animals in a humane way: Broox squirrel repellent outdoor, repels animals by emitting ultrasonic sound, alarm and LED flashing light. When the motion detector, detects a motion, it will trigger the ultrasonic speaker to emit a high frequency noise which makes animals uncomfortable, therefore, keeps them away from the protected area.
Solar Powered and Waterproof: With a solar panel on the top of the device, it can be charged by solar energy, that benefits in energy saving and environmental protection. It also can be charged with included USB cord. This outdoor repellent uses high-grade material with the weatherproof and UV-protected construction, which can protect itself against water splashed from all directions and withstand normal rain, snow, or the harsh sun. it is perfect for garden, yard, farm.
Human Design: ultrasonic animal repellent, Deer repellent is only to drive the animal without any chemicals. it is only issued 13.5kHz-45.5kHz ultrasound to drive them away.
Easy to Install, Versatile, and Wide Sensor Coverage: take the cat repellent outdoor, choose your desired mode, and place it where needed, insert it into the ground, mount it on a wall, With 5 frequency modes, it effectively repels a wide range of animal intruders, including cats, squirrels, deer. The repeller features a 110° infrared sensor angle with a detection range of 20–25 feet, depending on the size of the animal, ensuring broad coverage and reliable performance in protecting your area.

SaleBestseller No. 3

2 Packs Ultrasonic Animal Repeller Solar Powered, Cat Repellent Outdoor with Motion Sensor, Waterproof Deer Repellent Devices with LED Flash Light, Effective Repel Invasive Animals to Protect Yard

【Intelligent animal repellent】It adopts ultrasonic and motion detection technology. When animals enter the detection range, it automatically emits strong ultrasonic waves and flashing lights to effectively repel pests and small animals and protect your garden and home environment.
【Eco-Friendly & Dual Charging】X-PEST Animal repeller supports solar charging or USB fast charging. When used outdoors, it can be charged by solar energy during the day. When there is no sun, it can be charged by USB fast charging to ensure 24/7 protection of your yard from foreign animals. It will automatically remind you when the battery is low, which is worry-free and environmentally friendly.
【Waterproof and Durable】IP65 waterproof rating withstands harsh conditions, the sturdy ABS material is durable, and it can be installed indoors or outdoors. It is compact and can be inserted into the ground or hung alone, providing flexible coverage over a wider area.
【Multiple Working Modes】It’s equipped with sensitivity and frequency adjustment knobs. It has 5 working modes to adapt to different scene requirements. Ultrasonic waves target only animals (inaudible to humans), have no noise pollution, and effectively repel deer, cats, dogs, foxes, coyotes, raccoons and other invading animals.
【Worry-Free After-Sales Service】Our solar animal repeller can be used for a long time, effectively preventing the intrusion of foreign animals, and protecting your garden, courtyard, farm, lawn, orchard, RV and other outdoor scenes. If you have any questions about the product, please feel free to contact us, we will provide you with quality after-sales service.

Bestseller No. 4

Upgraded Solar Ultrasonic Animal Repellent Outdoor, Deer Repellent Devices Squirrel Cat Raccoon Rabbit Dog Deterrent, Keep Skunk Away Motion Detection with Flash Light for Yard Garden Lawn 1PACKGreen

【Motion Sensor Design】PIR motion detector system detected movements, then deer repellent emits powerful ultrasonic sound and flashing LED strobe light to deter animals from your protected area.The ultrasonic animal repeller outdoor device has a certain deterrent effect on deer, squirrels, cats, dogs, snakes, moles, gophers, chipmunks, skunks, raccoons, and rabbits. Please check the manual for details.
【Solar Powered & Waterproof】Squirrel repellent is equipped with a solar charging panel. This deer repellent devices can convert light energy into electrical energy for storage, reducing the use of traditional batteries. Made of high-strength and durable ABS material. Its special IP65 waterproof performance ensures a longer service life in various extreme weather conditions
【Easy to Use】This raccoon repellent has 120 degrees infrared sensor angle and detection distance ranges from 25-30 feet depending on animals’size. For the first use, charge the solar panel in direct sunlight for 2 days. After assembling the skunk repellent, select a right place to insert , ensuring sufficient direct sunlight and covering the area to be protected, preferably about 9-10 inches above the ground
【How to Work】Blue light indicates the charging status.Turn on the switch under the ultrasonic animal repellent head, the RED-LED light and ultrasonic singal will activate for 15 seconds. Among the time there is sound for 2.5 seconds and the white-led light flash blasting. Following ths activation, the rabbit repellent outdoor will move to stand-by mode till PIR sensor detected motion
【Safe and No Harm Drive】Cat repellent outdoor uses a humane way to deter animals from living area, protecting your yard, garden, farm, orchard, lawn and other outdoor places.Pure physical exclusion method, harmless, and will not cause harm to animals and humans

Bestseller No. 5

Solar Ultrasonic Animal Repellent, Deer Repellent Devices Waterproof with Motion Detection, Cat Repellent Outdoor Squirrel Skunk Rabbit Raccoon Dog Mouse Deterrents Animal Repeller for Yard Farm

【Effectively Drive Away Animals】Once the advanced motion sensor detects animals nearby, the deer repellent devices activate, emitting strong ultrasonic sounds and flashing LED strobe lights. The ultra-powerful sonic & light scare animals away and effectively deter them from your protected area in a peaceful way.
【Wide Coverage & Most Target Species】Features an infrared detection angle of up to 150 degrees and a detection range of 25-30 feet. The cat repellent outdoor effectively repels deer, cat, dog, squirrel, rabbit, raccoon and more. As soon as an animal is detected approaching, the deer repellent starts working. Designed for your animals control.
【Easy to Use & Works Anywhere】Simply assemble the raccoon repellent and place it in areas frequented by animals, positioning it approximately 9-10 inches above the ground. Two hanging holes also allow for mounting on trees or fences. It works effectively in farms, gardens, yards, orchards, lawns, vegetable patches, and various other outdoor settings.
【Solar Powered & IP65 Waterproof】The squirrel repellent can be charged with solar energy to achieve energy saving and environmental protection. For the first using, charge the solar panel in direct sunlight for 2 days. The animal repellent outdoor is made of durable ABS material with the special IP65 waterproof, exsuring normal use in any extreme weather conditions.
【Operation Guide】Blue light indicates that it is charging and red light indicates that it is working. Once turned ON, the red light and ultrasonic signal will activate for 15s. Among the time there is sound waves for 2.5s and LED light flashing at the begining. Following the activation, it will move to stand-by mode till PIR sensor detected motion.

Bestseller No. 6

2 Pack 2026 Ultrasonic Animal Repellent Outdoor Cat Repellent Devices Solar Animal Repeller Motion Activated Deterrent to Scare Deer Squirrel Rabbit Raccoon Skunk for Yard Lawn Outdoor

New Version Upgrade in 2026 - This ultrasonic mouse repellent features state of the art ultrasonic technology which creates a powerful ultrasonic wave,accompanied at the same time by an alarm sound. Ultrasonic animal repellers scare them away from your house, garden, yard and stop animals from ravaging your favorite plants.
Design of Motion Sensor - The built-in motion detection sensor is highly sensitive and will trigger at an angle of 110 degrees and 25-33 feet distance range. It can effectively drive away squirrels, raccoons, rabbits, cats, dogs, skunks, foxes and other animals to protect your plants, gardens and other properties.
Solar Fast Charging & Waterproof - High photoelectric conversion solar panel on its top, it can be charged by solar panel in the sun.If no new movement was detected, the repeller will return to stand-by mode, which can save more energy
Solar Powered & Waterproof - Our cat repellent is only to drive the animals without traps and no harm to human or animals. IP44 Waterproof design makes it keep working in rainy, snowy or freezing weather conditions no matter in the garden, farm, pond or when you are camping.
Safe & Human Design - You can simply insert the animal repeller into the ground or hang up where there is plenty of sun light and switch it on, which is perfect for yard, patio, garage, attics, porches, boats, garden, farm, pond, etc. Besides, it is mini enough for you to take it to outdoor, such as camping

Bestseller No. 7

2025 Solar Ultrasonic Animal Repellent, Cat Repellent Outdoor with Motion Sensor,Sound and LED Flashing,Waterproof Deer Repeller,Squirrel Repellent for Dog Bird Skunk Fox Rabbit Yard Lawn Dark Green

【Upgraded Motion Sensor】Our Dog Deterrent has a Upgraded motion detection system,When an animal approaches, especially a cat or dog it will send powerful ultrasound and LED light,It can not only drive away the animals you hate during the day, but also drive away the wolves, foxes, skunks, coyotes, deer that harass you at night.
【Easy to Install】Raccoon repellent is very easy to install and can be assembled in one minute.Point the product at the area you want to protect, select the desired mode, and insert it into the ground.This repellent has 110 degrees infrared sensor angle, detection distance ranges from 20-33 feet depending on animals’ size.
【Human & Environment Friendly Animal Solar Repeller】 Solar Animal Repeller is only to drive the animal without any chemicals. it is only issued 18kHz-40kHz ultrasound to drive them away. Will not have any harm to the human body.
【Solar-Powered and IP67 Waterproof Design】With a solar panel on the top of the device, it can be charged by solar energy, that benefits in energy saving and environmental protection. Our outdoor solar mouse repeller use the latest sealing technology and is waterproof up to IP67. It can work even outdoors in heavy rain. it is perfect for garden, yard, farm, etc.
【Best Service】If you have any questions about the quality of our products,please contact us and we will deal with your problem within 24 hours.

Bestseller No. 8

2026 Upgraded Solar Ultrasonic Animal Repellent Outdoor Cat Deer Repellent with Motion Sensor Flash Light,IP65 Waterproof Repeller Keep Rodent Squirrel Raccoon Opossum Skunk Out of Yard Farm,2 Pack

Solve Animal Invasion Problems with Dual Attack: Stop destructive animals humanely and effectively. Our advanced ultrasonic animal repellent features a sensitive PIR motion sensor. Upon detection, it triggers powerful ultrasonic waves (inaudible to humans) AND a LED strobe light. This combination assaults the auditory and nervous systems of deer, squirrels, raccoons, rabbits, skunks, cats, dogs, and rodents, creating an unbearable environment that forces them to flee.
Wide-Angle Protection & Fast, Lasting Results for Any Space: This solar ultrasonic repellent has a 25-foot range and 110° detection angle, safeguarding gardens, yards, patios, and farms. For optimal effect, allow 2-3 weeks of continuous use to establish a persistent "no-go zone." Effectively serves as a deer repellent, rabbit deterrent, raccoon repellent, squirrel repellent, cat repellent, and dog repellent, protecting your valuable plants and property from various pests.
Humane & Safe for Families, Pets, and the Environment: This deer repellent devices uses only sound and light—a pure physical method. It is completely no harm, causing no injury to animals, humans, or your beloved pets. It simply encourages unwanted visitors to seek food and shelter elsewhere, making it a safe rodent repellent and general animal deterrent for eco-conscious households.
Easy Setup for Immediate Protection: Start protecting in minutes. Cat repellent simply charge via sun or USB, mount the stake (approx. 9-10 inches high), and point it towards the problem area. The upgraded design automatically cycles through 13-45KHz frequencies, so there's no confusing manual adjustment needed.
Dual Power Modes & All-Weather Reliability for Non-Stop Defense: Never worry about dead batteries. Choose flexible charging: use the included USB cable or rely on the efficient solar-powered panel for sustainable, sun-charged operation. Built tough with an IP65 waterproof rating, it withstands rain, snow, and extreme temperatures (-20°C to 65°C), delivering year-round, maintenance-free performance in any weather.

The Ultimate Buying Guide: Keeping Pests Away with Sound

Tired of neighborhood cats digging up your garden or using your lawn as a litter box? An ultrasonic cat scarer might be your solution. These devices use high-frequency sound waves, which humans usually can’t hear, but which bother cats and other small animals. This guide helps you choose the best one for your needs.

Key Features to Look For

When shopping, you need to check what the device actually does. Good features make a big difference in keeping pests away effectively.

Detection Range and Coverage

Range: How far away can the device sense a cat? Look for models with a good detection distance, often 30 to 50 feet. A wider range covers more of your yard.
Angle: Does it cover a wide area side-to-side? A broader angle means fewer blind spots.

Adjustable Settings

Sensitivity: Can you adjust how easily the motion sensor triggers? If you have lots of wind or small birds, you might need lower sensitivity to avoid false alarms.
Frequency: Some advanced models let you select different sound frequencies. This helps target specific animals or avoid bothering pets you already own.

Power Source

Battery vs. Solar: Battery-powered units are easy to place anywhere. Solar-powered units charge themselves during the day, meaning less maintenance. Solar is usually the better long-term choice for outdoor use.

Important Materials and Durability

Since these devices live outside, the materials matter a lot. You want something tough.

Weather Resistance

Check for an IP rating (Ingress Protection). An IP44 rating means it resists splashing water. IP65 or higher means it handles heavy rain well.
The outer casing should be made of durable, weather-resistant plastic, like ABS plastic. This keeps the electronics safe from sun and storms.

Sensor Quality

The motion sensor (usually PIR, or Passive Infrared) needs to be reliable. Cheap sensors fail quickly or don’t detect movement properly. High-quality sensors react fast when an animal walks by.

Factors That Improve or Reduce Quality

Not all scarers work the same. Some design choices make them much better than others.

Improving Quality

Clear Mounting Options: Devices that offer stakes for the ground or brackets for walls allow you to position them perfectly for maximum coverage.
Effective Sound Output: Look for units advertised with a louder or more piercing ultrasonic tone (within safe limits). A stronger sound travels further and scares more effectively.

Reducing Quality (What to Avoid)

Visible Wiring: If the device uses a power cord, it limits where you can put it and creates a tripping hazard.
Low Battery Life: If you must change batteries every week, the device becomes annoying to use, reducing its overall quality for you.
Visible/Audible Sound: If the device makes a clicking sound or the ultrasonic sound is faintly audible to humans, it becomes a nuisance rather than a deterrent.

User Experience and Use Cases

How you plan to use the scarer affects which model you should buy.

Installation

Most ultrasonic scarers are simple to install. You usually stake them into the ground or mount them on a fence post. Place them facing the area where cats usually enter your yard. Aim them low, as cats walk close to the ground.

Use Cases

Garden Protection: Place them around vegetable patches or flower beds.
Driveway Deterrent: Mount them near carports where cats often sleep under vehicles.
Patio/Deck Areas: Use them to keep areas clean where you relax.

Remember, ultrasonic deterrents work best when they are new to the area. Cats might get used to them over time. Moving the device every few weeks can help keep the deterrent effective.

10 Frequently Asked Questions (FAQ)

Q: Are ultrasonic cat scarers safe for my own pets?

A: Generally, yes. The frequencies are usually too high for dogs and cats to hear clearly, especially if the device is aimed away from their favorite resting spots. However, if you have very sensitive pets, check if the model allows frequency adjustment.

Q: How long does it take for a cat scarer to work?

A: Results vary. Some cats leave immediately. Others might take a few days or even a week to learn the sound means “stay away.” Consistency is key.

Q: Will this repel other animals, like rabbits or foxes?

A: Many models repel various small mammals, including rabbits, squirrels, and sometimes raccoons. If you only want to target cats, look for models specifically tuned to the cat frequency range.

Q: What is the best placement height for these devices?

A: You should place them low to the ground, usually between 1 to 2 feet high. This targets the animal’s natural height when they are walking or digging.

Q: Do I need to turn them off at night?

A: No, most solar-powered or battery-operated models are designed to run 24/7. They usually only activate when the motion sensor detects movement.

Q: What if the device keeps going off falsely?

A: This usually means the sensitivity is set too high, or it is aimed toward heavy traffic or blowing leaves. Try lowering the sensitivity setting or slightly repositioning the unit.

Q: How long do the batteries usually last in non-solar models?

A: It depends on how often the sensor is triggered. If your yard is busy, batteries might last one to three months. High-quality models often last longer.

Q: Can I hide the ultrasonic cat scarer?

A: You should hide it somewhat, but not completely. The motion sensor needs a clear line of sight to detect animals, and the sound needs to travel outward without being blocked by dense shrubs.

Q: What happens if it rains heavily?

A: If the device has a good IP rating (IP44 or better), light to moderate rain should not affect it. Very heavy, continuous downpours might cause issues if the seals fail.

Q: Are these devices legal to use?

A: Yes, ultrasonic deterrents are generally legal for private property use. They do not cause physical harm. Check local noise ordinances if you live in a very dense area, although the sound is usually inaudible to humans.