Solar Ultrasonic Animal Repellent 2-Pack, Motion Sensor Cat and Deer Deterrent

Description

If neighborhood cats are using your beds as a litter box, or deer are pruning your roses for you, this Solar Animal Repellent Ultrasonic, 2 Pack Cat Repellent Outdoor Deer Repellent Devices Motion Sensor Animal Repeller gives you a simple, humane way to claim your yard back. Each unit uses a passive infrared motion sensor with ultrasonic sound and flashing LEDs to startle intruders like cats, deer, squirrels, rabbits, dogs, and skunks, and it charges from sunlight so you can set it and forget it.

Ultrasonic output targets frequencies above the upper limit of typical adult human hearing, so most people will not notice the sound while animals certainly do, which keeps the experience neighbor friendly and pet considerate.

Key Customer Benefits

• Humane, non-toxic deterrence you can feel good about. This solar animal repellent ultrasonic kit discourages visits without traps or chemicals, which aligns with animal-welfare guidance that deterrents should not cause pain, injury, or distress.
• Animals hear it, most adults do not. Cats can hear up to roughly 85 kilohertz and white-tailed deer can detect sounds into the ultrasonic range, while typical adult human hearing tops out near 15 to 20 kilohertz. That gap is why ultrasonic bursts can get animals’ attention without disturbing most people.
• Motion-activated to save power and reduce “noise fatigue.” A passive infrared sensor triggers short bursts only when a warm-bodied animal crosses the detection zone. PIR sensors are prized for low power draw and reliability, so you get targeted activation instead of constant sound.
• True set-and-forget convenience with solar charging. Daily sunlight keeps the internal battery topped up, avoiding cable runs and routine battery swaps. As a reference point for garden solar devices, a full day of sun typically provides several hours of operation into the evening, depending on panel size, battery capacity, and local sunshine.
• Built for the yard, not just the shelf. An outdoor-rated housing with a common weather protection level such as IP44 helps resist dust ingress and splashing rain, which is what you want for a device that lives by your beds and borders.
• Evidence-based expectations. Independent field work has shown ultrasonic cat deterrents can moderately reduce garden incursions, although results vary by site and habits. Studies report measurable reductions, and broader reviews note mixed outcomes across pests, which is why pairing ultrasound with good habitat hygiene gives the best results.
• Neighbor-aware by design. Ultrasonic devices are generally unobtrusive, yet be aware that some individuals, particularly younger people with extended high-frequency hearing, may notice certain units if they emit near the upper edge of the human range. Managing placement and aiming helps minimize this.

 

Product Description

What this 2-pack actually is:

This Solar Animal Repellent Ultrasonic, 2 Pack is a pair of compact, weather-resistant units that live in your beds and borders. Each device combines a solar panel, a rechargeable battery, a passive infrared motion sensor, an ultrasonic speaker, and small LED strobes. When the sensor notices a warm-bodied visitor in its zone, the unit wakes up and delivers a quick burst of high-frequency sound, often with a brief flash of light, then goes back to sleep to conserve power. That means no cords, no chemicals, and less day-to-day fuss for you. Typical manuals for solar animal repellents describe motion-triggered output that sweeps through ultrasonic frequencies and then shuts off after a few seconds, which aligns with how this category is designed to work.

How it works:

The sensor on the front is a PIR, short for passive infrared. Instead of “beaming” energy out, it quietly watches the infrared heat in the scene and looks for changes. When a warm animal crosses its field of view, the electronics fire the speaker and lights. PIRs are popular because they are reliable, energy-efficient, and easy to aim. In garden gear the detection pattern commonly spans a moderate arc and several meters of distance, and individual repeller manuals specify ranges like 7 meters at roughly a medium-width cone, while some models specify wider angles that approach typical security lights. In practice, you mount the unit to face the path animals take, you keep the lens clean, and you let the sensor do the rest.

Once triggered, the device emits ultrasound, which sits above most adult human hearing, yet well within the hearing of many animals. Domestic cats can detect very high frequencies with upper limits reported in the 60 to 85 kilohertz region, and white-tailed deer have been measured hearing up to about 30 kilohertz, so a sweep of high tones is noticeable to them even when you cannot hear a thing.

Why this approach can be effective, and what sets it apart

There is real-world evidence that ultrasonic deterrents can reduce cat incursions when used correctly. A peer-reviewed field study published in Applied Animal Behaviour Science tested an ultrasonic cat deterrent in suburban gardens and reported a moderate reduction in visits, with effects improving over time as animals learned that a given area was not pleasant to enter. This fits what many owners observe after a few weeks of consistent use. Frequency-sweeping designs and motion-only activation help reduce “noise fatigue,” while the addition of brief LED strobes adds a visual startle that some species dislike, especially at night.

That said, wildlife is diverse. Extension and wildlife-damage researchers note that any single “frightening device,” including ultrasonic or light-based tools, can have mixed results across species and sites. The best outcomes come when you combine tools and good habitat hygiene. For example, pair your solar powered deer repeller with plant choices deer do not prefer, rotate or relocate deterrents so animals do not acclimate, and keep attractants like spilled birdseed to a minimum. Using your repellers as one layer in a small integrated pest management plan gives you the fairest expectations and the most reliable results.

Weather protection and power matter too. Many garden-grade housings list ingress protection levels such as IP44, which means protection against most solid particles and splashing water. That rating is appropriate for typical outdoor use in exposed beds and along fences, and it is one reason these units withstand rain showers without a secondary cover. Because they are solar, manufacturers also recommend an initial full charge and occasional top-ups by USB during long cloudy spells, which keeps performance consistent through the seasons.

Product Specifications

Category	What to expect on this 2-pack class
Power and charging	Solar panel on top for daily charging, plus a USB charging option for long cloudy stretches.
Battery	One 3.7-volt 18650 lithium-ion cell is typical, with capacity commonly in the 1300 to 2200 mAh range depending on model.
Weather rating	Outdoor splash resistance, commonly listed as IP44 for garden use.
Housing material	Impact-resistant ABS plastic enclosure.
Detection distance	Motion detection generally in the 6 to 8 meter range in a forward cone, depending on placement and conditions.
Detection angle	A single PIR usually covers about a 110-degree arc; multi-sensor designs can be wider.
Sound output frequency	Adjustable ultrasonic output that sweeps through high-frequency bands; many models span roughly the mid-teens to mid-40s kilohertz, with some reaching higher.
Lighting	Short LED flashes during activation to add a visual startle at night.
Controls	Typically two rotary dials: one for sensitivity or distance and one for frequency; some units offer mode positions that combine LEDs or different bands.
Coverage description	Think in terms of a detection cone, not an entire yard. A single head usually covers a forward arc to roughly 6 to 8 meters in clear line-of-sight.
Dimensions and weight	Compact stake-mount head, small and lightweight for easy placement; exact size varies by brand.
What is in the box	Repeller head, ground stake or mounting hardware, and a USB cable for charging.
Setup height and aiming	Aim the PIR lens across the animal’s path at body height. Avoid pointing at walkways or shrubs that move in wind.
Time to full effect	Allow two to four weeks of consistent use for resident animals to change their routes and habits.
Safety notes	Humane and chemical-free. Some individuals with very sensitive high-frequency hearing might notice certain units if set near the upper edge of human hearing; keep devices away from play areas.
Compliance and markings	Expect common consumer markings such as CE or FCC, and sometimes RoHS. Check your specific unit’s label.

 

How to Use and Install the Solar Ultrasonic Animal Repellent

Before you start: charge, check, and plan

Out of the box, give each unit a proper charge so the PIR sensor and speaker respond crisply. Place the panel in direct sun for about a full day, or top up by USB if the weather is cloudy. A typical manual specifies that a depleted battery needs roughly eight hours of direct sun for a full charge, and it also notes that USB charging should be done indoors since the charging port cover must be open.

While the units charge, walk your yard and mark two kinds of spots. First, entry points that animals use, such as gaps under gates and fence lines. Second, high-value targets like raised beds, lawns with fresh seed, or shrubs that deer browse. Plan to place your first repeller at an entry, and the second at a hot spot, then fine-tune after a few days of observation. A manufacturer guide for cat repellers recommends moving the device if needed and giving it time to influence habits.

Placement height and aiming that actually works

Think line of sight. Ultrasonic output and the PIR work best with a clear forward view. Manuals advise aiming toward the area animals cross, not into hedges or onto busy footpaths that can cause false triggers. Keep the lens clean and mount so the beam sweeps across the animal’s path rather than straight at the sky. Typical detection is a cone about 110 degrees wide with a reach up to roughly 8 meters in open space, so avoid placing the unit behind solid objects that block the sensor and sound.

Height matters by species. For cats and small dogs, set the head low, about ankle to mid-calf height. One cat-repeller manual calls out an ideal height between 13 and 35 centimeters above ground so the PIR looks across a cat’s path. If deer are your primary issue, raise the head so the beam crosses chest height along their approach, or pair a low unit at an entry with a higher one near browse lines.

Dial in sensitivity and frequency without annoying the neighbors

Start with mid sensitivity so the unit triggers on animals, not waving shrubs. If you see lots of empty activations, turn sensitivity down a notch. If visitors slip through, increase it. Manuals describe two simple knobs, one for sensitivity and one for frequency. Begin in a mid frequency band, then try another band if the target species ignores the sound. Many models include programs that combine sound with LED flashes at night. Some programs can be audible to people with extended high-frequency hearing, so choose a less audible program and aim the head away from patios, paths, and windows if anyone can hear it.

Power and weather details that keep performance steady

These heads are built for the yard with splash protection often noted as IP44. That means rain is fine, submersion is not. Place the solar panel where it gets midday sun, wipe dust or snow off the panel, and give the battery an occasional USB top-up during long cloudy stretches. Some models show a small indicator LED when charging or when the PIR triggers, which is useful for testing placement.

First-week setup: test, adjust, and relocate if needed

On day one, switch a unit on and walk its path to confirm the PIR trips and the LEDs or sound fire briefly, then return to standby. Over the first week, watch tracks, scat, or trail-cam clips and nudge placement a half meter at a time to tighten coverage. A cat-repeller manual and other brand guides note that habits often change over days rather than hours, so give your adjustments several nights before you judge.

Troubleshooting quick fixes

If performance drops, check four things in order. Make sure the panel has sun or the battery has a USB top-up, confirm the power switch is on, wipe the PIR lens, and try a different operating mode if animals seem to be adapting. Several user manuals specifically recommend rotating modes and relocating the device a little to keep animals from getting used to it.

Ultrasonic and light startle devices are one tool. Wildlife groups and university extensions emphasize that deer and other animals can habituate to any single deterrent, so reposition devices periodically and combine them with practical steps, such as removing attractants, choosing less palatable plants, and using barriers in sensitive spots. For persistent deer pressure, properly built fencing is still the gold standard while your repellers help steer nightly traffic away from beds.

FAQs

Do ultrasonic animal repellers actually work in gardens?

Short answer, sometimes, and results depend on the species, your layout, and placement. A randomized, controlled garden trial published in Applied Animal Behaviour Science found an ultrasonic cat deterrent cut cat visit frequency and time spent in test plots, showing a moderate reduction rather than a total stop.

On the other hand, several university extension reviews judge ultrasonic repellers inconsistent across pests like rodents and insects, and recommend pairing them with habitat cleanup and physical barriers. That is why I frame these devices as one layer in a small integrated plan rather than a stand-alone cure.

How long before I see a difference?

Give it steady use for about two weeks while you fine-tune aim and sensitivity. Multiple manufacturer manuals and setup guides advise at least two weeks of consistent operation, plus occasional mode changes to reduce animal acclimation.

Will the sound bother my own pets or kids?

Most adults cannot hear typical ultrasonic output, however cats and dogs hear much higher frequencies than we do, so they can perceive it. Classic audiogram work places cats’ upper hearing near eighty kilohertz, and dogs’ upper limit around forty five to forty seven kilohertz. Healthy adult humans usually top out near fifteen to twenty kilohertz, and many teenagers can hear slightly higher. If you keep dogs or you have sound-sensitive family members, start with lower-audible programs, aim devices away from patios and windows, and use the minimum sensitivity that still triggers on visiting animals.

A small number of people report annoyance from poorly aimed units that leak energy near the edge of human hearing. Real-world threads describe neighbors hearing high pitched chirps when the device faces public paths or fires too often in wind. Good aiming and mode choice usually solves this.

Will it scare off birds at my feeder?

Most birds hear best between about one and four kilohertz, and there is no evidence that birds detect frequencies above twenty kilohertz. That means most ultrasonic output sits above typical bird hearing and does not function as a bird deterrent. Place the head so the PIR does not look across your feeder area to avoid unnecessary flashing at daytime visitors.

Is it safe around hedgehogs and other garden wildlife?

Wildlife hearing differs by species. Hedgehog advocates caution that some hogs react to ultrasonic scarers, so if you actively attract hedgehogs you should aim devices away from hog routes, use the lowest effective sensitivity, or choose non-acoustic methods near feeding stations.

Does ultrasound travel through fences, shrubs, or walls?

High frequencies attenuate quickly in air and are easily blocked by solid objects. In practice, think line of sight. Place the unit with a clear forward view and do not expect it to work through walls, thick hedges, or over complex terrain.

Where should I put each head, and at what height?

Start by covering entries, then protect high value spots. Most solar animal repellers in this class detect motion within a cone of roughly one hundred ten degrees and about eight to nine meters in open space, so point the lens across the path animals take rather than into shrubs or the sky. For cats and small dogs, set the head low at body height, then adjust by half a meter over the first week until you see clean triggers. Manuals list those angles and distances and recommend incremental repositioning during early use.

Will it help with deer?

White-tailed deer hear into the low ultrasonic range, which means they can perceive these signals. That said, deer are adaptable, so use repellers to reinforce other measures like plant choice and temporary fencing around the most browsed shrubs. Expect deterrence, not complete exclusion.

What settings should I start with?

Begin mid sensitivity and a middle frequency band, then observe. If wind or passing people cause frequent triggers, turn sensitivity down a notch. If target animals ignore it, try the next frequency band. Manuals and nonprofit how-to guides recommend mid-band starts for cats and frequency changes if the first setting does not get attention.

My neighbor can hear a high pitched chirp. What can I do?

First, verify which program you are using and lower the audible component if your model offers that option. Second, aim the speaker away from shared boundaries and reduce sensitivity so it triggers only when a warm-bodied animal crosses your beds. Community threads show that re-aiming and sensitivity tweaks often fix neighbor annoyance. If an individual still hears it, consider a spray sprinkler at that boundary instead.

Will weather damage it?

Look for an IP44 weather rating in the manual. IP44 means protection against most solid particles and splashing water, suitable for normal outdoor exposure, but not immersion. Keep the solar panel clear of dust and leaves and give the battery a USB top-up after long cloudy runs.

Do I need more than one unit?

If the area you want to protect is larger than an individual head’s detection cone and distance, you will need more than one. A practical rule from nonprofit guidance is to cover entries first, then layer units to close gaps in larger yards.

Will these devices keep squirrels, rabbits, or skunks out?

They can reduce visits, yet effectiveness varies by species and site. Extension reviews consider ultrasound an inconsistent tool for wildlife control, so combine it with habitat cleanup, blocking attractants, and small barriers around sensitive beds. That combination is what delivers reliable results.

Conclusion

If you want a humane, low-fuss way to reclaim beds and borders, the Solar Animal Repellent Ultrasonic 2-Pack is a smart first line of defense. Independent, peer-reviewed garden trials found that ultrasonic cat deterrents reduced visits and time spent in test plots, which matches what many homeowners see once placement and settings are dialed in. Expect deterrence, not perfection, and give it a couple of weeks to reshape animal habits.

For deer, there is solid biological footing for using sound as a nudge. Audiogram studies show white-tailed deer perceive high frequencies that humans usually do not, which explains why motion-triggered ultrasonic bursts can get their attention without turning your patio into a noise zone.

Most importantly, pair your repellers with practical, humane yard habits. Animal-welfare groups advise focusing on non-harmful deterrents and simple entry-point fixes, such as mending gaps in fencing and removing attractants. That keeps your approach kind and neighbor-friendly while improving results.