The best ultrasonic bird repellers, compared.
Top pick: SLAJMNZH solar DB0567 Best value: bergxperten solar IP65 – Lowest price among listings with 20 or more reviews, about £22.99, with a printed 20–50 kHz band. Updated October 2026.
Pigeon droppings on a balcony, a solar panel or a loft sill are why people look at an ultrasonic bird repeller. It is a battery, USB or solar box that claims to move pigeons, gulls or starlings with high-frequency sound. Defra’s non-lethal review says ultrasonics are ineffective or unsafe for birds: a cited pigeon trial found no effect, and most birds are not shown to hear above 20 kHz. That is a better-documented listing, not a unit that clears pigeons. Spikes, wire and netting versus a sound box are in the [ultrasonic bird repeller versus proofing](/hub/pest-control/ultrasonic-bird-repeller/sub/ultrasonic-bird-repeller-vs-proofing) guide. An ultrasonic bird repeller on amazon.co.uk is a small battery, USB or solar unit. Shoppers buy one because droppings are the nuisance and a plastic box looks easier than netting.
Pigeon droppings on a balcony, a solar panel or a loft sill are why people look at an ultrasonic bird repeller. It is a battery, USB or solar box that claims to move pigeons, gulls or starlings with high-frequency sound.
38 products checked · 58 hrs invested · +17,200 readers
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Personal buying guide
Question 1 of 2
Where will the unit sit?
The SLAJMNZH DB0567 is the other solar hook at £21.99, with a claimed 8–35 kHz band, a red flash, IP54 and a mounting height of 1–2 m in a sunny spot. Three UK reviews, all 5.0, mention an attic and nesting material, a slow change over about three weeks, and a unit that seemed to react when a bird came close. None of them mentions rain, gulls, or a measured area, and the bullets also name foxes and stray cats. The size table says 10 × 10 × 10 mm beside a weight of 180 g, so the millimetre figure is not the product. Coverage is only “a wide area”. Three positive texts are still too few to show the failures that larger samples in this set record.
Pros
Cons
Best for: A sunny spot at 1–2 m when you want a solar unit and can wait, knowing the sample is three reviews
Less suitable: Exposed rain you cannot check, fox control, or a ledge that must not be landed on
Specifications
Common questions
Does the listing state a coverage area?
The bullets say a wide area and do not give square metres. They do say mount it at 1–2 m.
Will it run in a British winter?
The bullet says the solar panel is backed up by USB for cloudy days. The three reviews do not test that.
What else does it claim to move?
Pigeons, seagulls and crows, plus foxes and stray cats in the bullets. The three reviews talk about birds, not foxes.
The SLAJMNZH DB0365 is another USB rechargeable two-pack at £32.99, about 10 × 6.6 × 10 cm and 210 g, with adjustable intensity and no kilohertz number. The title and bullets talk about birds on a balcony, gutter, patio or allotment. The specification field says Bat, which is a different and legally sensitive target, and there is no IP code or runtime. Two UK reviews, both 5.0, say birds and mess on a car eased after more than two weeks, and that balcony flowerpots were visited less after about a week. A review mentions a hook hole for a tree or fence. Two positive texts do not record a leak, a dead unit or a pigeon that stayed, so the 5.0 is a very small sample next to the Isotronic pools at 2.6. The listing’s own “two to three weeks” line is a sales timetable, not a result you can verify on day one.
Pros
Cons
Best for: A dry balcony or a car-parking spot when you want two rechargeable units and you treat two reviews as anecdotes
Less suitable: Bat control, wet gutters, or a comparison that treats 5.0 from two reviews as stronger evidence than 2.6 from 2,112
Specifications
Common questions
How long does the battery last?
The bullets say USB, rechargeable and cordless. They do not give a runtime.
Is it for bats or birds?
The title and bullets say birds. The specification field says Bat. The two reviews talk about birds on a car and a balcony.
Does the listing confirm wet-weather use?
There is no IP rating. The bullets name gutters and gardens without a waterproof code.
The SLAJMNZH DB0520 is a solar hook unit at £21.99 that claims an 8–35 kHz sweep, IP54 housing and a cycle of 5 seconds on and 25 seconds off. The listing says a USB port covers a long spell without sun and quotes 6–12 months of solar running, which the reviews do not check. The only UK text is a 5.0 and says the garden felt quieter of pigeons after a few days. That is one impression, not a count of birds, and the bullets also name reptiles. The size table says 10 × 10 × 10 mm and 0.25 g, which cannot be the housing you hang on a fence. A band that starts at 8 kHz can be audible, so the silent title is not something the page itself proves.
Pros
Cons
Best for: A sunny fence hook at £21.99 when you can live with one unchecked impression
Less suitable: Anyone treating 5.0 as proof, or a site with no sun and no USB access
Specifications
Common questions
What happens on a cloudy day?
The bullet says a USB port covers a long spell without sun. No hour figure is given.
Is it rated against rain?
The listing claims IP54 and a 5-seconds-on, 25-seconds-off cycle. The single review does not mention water.
How big is the unit?
The table says 10 × 10 × 10 mm and 0.25 g. Those figures do not match a solar housing and should not be used as the size.
The LSJXHAIK pair, model DB0470, is a USB or rechargeable two-pack at £29.99 with a claimed band of 13.5–45 kHz and six levels. The listing itself says some of those frequencies may be audible to people and household pets, and it claims up to 370 m² for the two units, which is a seller figure. It is described for sheltered spots such as a loft, garage, shed or carport, not for open rain. The only UK review, a 5.0, says mice and bats left an attic after a week and does not mention pigeons. Targeting bats is a legal problem in Britain, not a feature, because roosts are protected. The brand is given as LSJXHAIK and the manufacturer as SLLYLL, and the size table’s 10 mm cube does not match a 230 g pack.
Pros
Cons
Best for: A sheltered loft or garage shelf only if you are sure there is no bat roost and you ignore the bat line
Less suitable: Anyone hoping to move bats, an exposed balcony, or a pigeon sill
Specifications
Common questions
Can it be used indoors?
The bullets say USB power for lofts and garages, and sheltered outdoor spots such as a carport. They do not claim a fully exposed rain rating.
Will pets hear it?
The listing says some frequencies in the 13.5–45 kHz range may be audible to people and household pets.
What did the only review report?
One UK review says mice and bats left an attic after a week. It does not mention pigeons. The 370 m² line is a listing claim.
The SLAJMNZH DB0368 is a USB rechargeable two-pack at £32.99, listed at 9.8 × 9.6 × 5.5 cm and 200 g, with adjustable intensity and no kilohertz figure. The bullets say the sound travels in a straight line and name a balcony, loft, warehouse, garden and allotment, without an IP rating. The star line is 3.3 from four reviews, and three UK texts are on the listing. They praise a compact hang and a charging cable in the box, and one mentions less dawn birdsong and small neighbourhood birds. That same reviewer will not say it works on large birds such as pigeons. There is no leak or dead-cell report in those three texts, and there is also no runtime in hours. Four reviews cannot show whether a straight-line beam misses a pier or a hanging basket.
Pros
Cons
Best for: A cordless two-pack for a dry balcony or loft when small birds are the complaint and pigeons are still an open question
Less suitable: Rain, a pigeon-only job, or a buyer who needs a printed frequency
Specifications
Common questions
How long does a charge last?
The bullets do not give hours. A review likes the cordless design and says a charging cable is included.
Can it go out in the wet?
There is no IP rating. The reviews do not describe rain.
Do the reviews cover pigeons?
One text says it seemed to work on small birds and the writer was unsure about large birds. The star line is 3.3 from 4.
The ISOTRONIC 70628 is one battery unit at £32.45, about 6.8 × 3.8 × 11.5 cm and 96 g, running on six AAA cells with a claimed life of about eight months. The listing says about 40 m² and up to 10 m, and it does not print a kilohertz figure or an IP code. The star line is 2.6 from 6,144, and the first 50 UK texts are the same as on the two-pack B072QBL4PF, so this is not a second sample of 6,144 people. In that shared pool some buyers describe a loft, windowsill or garden easing after days or weeks, and many say pigeons or gulls sit on the housing. Reviews also describe a red light for a few seconds and then silence, which makes a dead unit hard to spot, plus rain at the switch or speaker and cells that arrived flat. You are paying for one housing and a large, mixed, shared record, not for a measured 40 m².
Pros
Cons
Best for: A single windowsill or loft shelf when you want the cheaper of the two listings that share this review pool
Less suitable: Open rain, a tiled roof you cannot fix to, or anyone adding this count to the two-pack’s 6,144
Specifications
Common questions
Is this a different review sample from the two-pack?
No. This listing and B072QBL4PF both show 2.6 from 6,144, and the first 50 UK texts match. Do not add the counts.
Does the listing say it is weatherproof?
There is no IP code. Reviews in the shared pool describe rain entering the switch or the speaker.
How do you know it is on?
Reviews describe a red light for a few seconds and no sound you can hear. Several buyers could not tell a working unit from a dead one.
The ISOTRONIC 70625 is two battery units at £41.01, the top price in this set, with the same claimed 40 m², 10 m reach and six AAA cells for about eight months as the single 70628. The star line is again 2.6 from 6,144, and the first 50 UK texts match the single-unit listing, so the extra housing is not an extra trial. Buyers in that pool describe pigeons leaving a windowsill or the space under solar panels after days or about three weeks, and they also describe gulls and pigeons sitting on the unit, rain through the switch or speaker, and supplied cells that were dead. There is still no kilohertz figure and no IP code. Paying £8.56 more than the single unit buys a second box from the same mixed record, which helps only if you truly need two sills in one order. It does not buy a higher chance on the evidence we have.
Pros
Cons
Best for: Two covered sills or a loft and a balcony ordered together, if you already accept the shared 2.6 record
Less suitable: A buyer who thinks the higher price or the second 6,144 count is new evidence
Specifications
Common questions
Why is the review count the same as the single unit?
B072QBL4PF and B0711BVHJ4 both show 2.6 from 6,144, and the first 50 UK texts are the same. This pack is two units at £41.01.
Do the reviews say it keeps pigeons off?
The pool is mixed. Some report a loft or windowsill clearing. Many say pigeons or gulls sit on the unit.
Is it weatherproof?
There is no IP code. Reviews describe rain through the switch or the speaker, and supplied AAA cells that were dead.
The ISOTRONIC 92405 is one ABS unit at £32.45, about 5 × 4 × 8 cm and 62 g, sold with a high-frequency claim plus electromagnetic signals and a listing area of about 50 m². It is the largest separate review pool in this set: 2.6 from 2,112, not the shared 6,144 on the other two Isotronic ASINs. Some UK buyers report mess gone from a yard, a satellite dish, a balcony or a car within a day to a few weeks, and a few mention a thinner roost under solar panels. Many others say pigeons sit on or beside the unit, that it is not waterproof, and that cells last about one to three weeks rather than the claimed three months. A review says the instructions limit outdoor range to about 4 m with a clear line, which undercuts the 50 m² bullet. The electromagnetic line is a seller claim the Advertising Standards Authority has not accepted as evidence. It is the top pick here only as the best-documented single listing, not as a device that clears pigeons.
Pros
Cons
Best for: A reader who wants the largest independent review sample in this set before trying one battery unit indoors or under cover
Less suitable: A ledge that must stay empty, open rain, or anyone buying the electromagnetic line as a proven extra
Specifications
Common questions
Is the 50 m² figure what the instructions say?
The listing says about 50 m². A UK review says the instructions limit outdoor range to about 4 m with a clear line and no obstructions.
How long do the batteries last in reviews?
The bullet says about three months from six AAA cells. Several reviews report one to three weeks, including with Duracell.
Is it waterproof?
Reviews say it is not waterproof, and one says the battery backplate does not lock shut. The listing does not print an IP code.
The bergxperten solar unit costs £22.99 and is the only solar listing here with a review sample you can argue about: 2.5 from 24. It prints 20–50 kHz, claims IP65, and says a dusk sensor switches it off at night, so it is not a 24-hour device. One review describes a usable radius near 9.5 m and about 120 degrees if aimed low, and another says pigeon noise stopped. Several others report no effect, a missing ground stake, a unit that is not waterproof despite the IP65 title, and children next door who could hear it. Two reviews mention a low-voltage lead for dull weather, which the “no wiring” line does not cover. At this price it is the best value in the set because the failures are on the record, not because the stars show a clear garden.
Pros
Cons
Best for: A cheap solar trial on a lawn or patio where you can aim it low and accept a mixed 24-review record
Less suitable: Night roosts, a site that must stay silent for neighbours, or anywhere the stake and the rain claim have to be true
Specifications
Common questions
Does the stake come in the box?
The bullets say you can stake it into soil with no tools. A UK review says the stake was not supplied.
Is the IP65 claim backed by the reviews?
The title says IP65. A review says the item is not waterproof. Another review recharged it with a 4.5 V lead in bad weather.
Can people hear it?
The band claimed is 20–50 kHz. One review says children next door could hear a unit and would not go outside.
The SLAJMNZH DB0555 is a rechargeable two-pack at £31.99 with a rotary dial claimed at 5–30 kHz and a 1000 mAh cell. That band starts in ordinary hearing, and the listing does not give a runtime in hours. Four UK reviews average 1.7. One calls it silent and easy to hang, and one says it does not work and is a waste of money. A review of the leaflet says the unit should not get wet, which sits badly next to an outdoor title and the named sites of a balcony, patio and orchard. Dimensions are a more credible 9.8 × 9.6 × 5.5 cm, though the listing gives both 82 g and 200 g. There is no IP rating to set against that leaflet warning.
Pros
Cons
Best for: A dry, sheltered hang where you want a visible frequency dial and can accept a poor four-review score
Less suitable: Unsheltered rain, or a buyer who reads 5 kHz as silent ultrasound
Specifications
Common questions
Can this unit go out in the rain?
A UK review says the leaflet tells you not to let it get wet and to choose a suitable position. There is no IP rating on the listing.
What frequency does the dial cover?
The title and bullet say 5–30 kHz. That range includes frequencies below 20 kHz.
How many reviews are on the listing?
The listing shows 1.7 out of 5 from 4 reviews. Four UK texts are present, and they disagree on whether it works.
The Rarityll pair is two pocket units, about 5.5 × 3.7 × 1.4 cm and 20 g, sold together for £9.99. The listing claims 34 Hz to 70 kHz, a 10 m reach, a motion sensor and a 30-minute charge followed by 2–3 days of use. The same page also names foxes, cats, squirrels and a wearable flea and tick use, so it is not a fixed balcony scarer. The amazon.co.uk listing has no star line and no review text, which means none of those claims has a UK buyer check. A band that starts at 34 Hz is ordinary sound as well as a high-frequency claim. There is no weather rating, so a pocket is the only place the listing itself supports.
Pros
Cons
Best for: A pocket-sized trial when you already accept there is no review evidence
Less suitable: A fixed ledge, rain, or anyone who needs a checked pigeon result
Specifications
Common questions
How long does the Rarityll pair claim to run?
The listing says a full charge takes 0.5 hours and then 2–3 days of continuous use. There is no review on the listing to check that.
Is this only a bird repeller?
The title also names foxes, cats and squirrels, and the bullets add a wearable flea and tick use. The bird claim is one of several.
Does the listing show a star rating?
No. The listing has no customer-review line and no review text.
Eleven amazon.co.uk listings are scored. There is no laboratory test. Kilohertz bands, IP codes and square-metre lines stay seller claims. Defra’s non-lethal review does not support ultrasound as a way to clear birds, so a high score means a better-documented listing, not a proven scarer. The star line is the amazon.co.uk figure. B072QBL4PF and B0711BVHJ4 share one review pool and are not added together.
Stars
25%Amazon stars divided by 5, times 25, with halves rounded upward. No star line scores 0.
Review volume
30%2,000 or more reviews score 30. 100–1,999 score 18. 20–99 score 12. 4–19 score 6. Two or three score 3. One review scores 1. None scores 0.
Checkable spec
20%A printed kilohertz band scores 6, and a band that starts at or above 20 kHz scores a further 4. A printed IP code scores 4, a named power source 4, and an explicit pack count 2.
Bird-review signal
15%A large mixed pigeon sample in its own pool scores 12. A mixed sample of 20–99 scores 8. Four texts that disagree score 5. Two or three positive bird texts score 3. One pigeon note scores 2. A text that is not about pigeons scores 1. None scores 0.
Price in this set
10%£12 or under scores 10. £12.01–£25 scores 8. £25.01–£36 scores 6. Over £36 scores 4. The best value is the lowest price among listings with 20 or more reviews, not the £9.99 pair with no reviews.
Buy on the printed frequency, the weather line the reviews do not contradict, the power source, and whether the review sample is large enough to show failures. A 5.0 from one to three reviews is not that sample. Square-metre bullets stay seller figures. Two Isotronic ASINs share one pool of 6,144 texts, so do not add them. None of these scores is a laboratory test, and none of them is a claim that a box clears pigeons.
An ultrasonic bird repeller on amazon.co.uk is a small battery, USB or solar unit. The listing claims it moves pigeons, gulls or starlings off a balcony, roof, loft or garden with high-frequency sound, sometimes with a flashing light. Shoppers buy one because droppings are the nuisance and a plastic box looks easier than netting. Defra’s non-lethal review says ultrasonics are ineffective or unsafe for birds.
About 40 m², about 50 m² and up to 370 m² are listing lines. One Isotronic review says the instructions limit outdoor range to about 4 m against a 50 m² bullet. A bergxperten review’s note of about 9.5 m is one person’s report, not a measured coverage for the set.
Several bands start at 5–13.5 kHz, or at 34 Hz, so “silent and pet-safe” is a seller line. Isotronic reviews often hear nothing, which also makes a dead unit hard to tell from a live one. A bergxperten review says children next door could hear it.
B072QBL4PF and B0711BVHJ4 share 2.6 from 6,144 and the same first 50 texts. Buying both does not buy a second trial. Waiting three weeks only because a listing calls the effect progressive, or leaving a unit with no IP code out in the rain, are the other common misses.
Ultrasound means above about 20 kHz. Defra’s review says most birds are not shown to hear above that line, and a cited pigeon trial found no effect. Beason’s hearing paper puts the pigeon peak around 1–2 kHz. A band printed as 5–30 kHz, 8–35 kHz or 13.5–45 kHz therefore includes ordinary sound. The SLAJMNZH DB0555 dial starts at 5 kHz. The two SLAJMNZH solar units start at 8 kHz. The LSJXHAIK pair starts at 13.5 kHz, and the listing itself says some settings may be audible to people and pets.
Rain needs an IP claim that the reviews do not contradict. The bergxperten title says IP65, and a review says the item is not waterproof. The two cheaper SLAJMNZH solar units claim IP54, each from one or three reviews that do not mention water. The SLAJMNZH DB0555 has no IP code, and a review says the leaflet says keep it dry. The Isotronic listings have no IP code, and reviews describe rain at the switch, the speaker or the backplate. Solar needs daylight.
Three typical situations, each with a recommendation from this comparison.
You want the largest separate review sample before you try one battery unit under cover. The ISOTRONIC 92405 is about £32.45, with 2.6 from 2,112 reviews. It is the top pick as a documented listing, not as a device that clears pigeons. Reviews say it is not waterproof, and one review limits the instructions to about 4 m outdoors.
You are comparing a solar unit near £22 with a rechargeable pack, and you want more than one or three reviews. The bergxperten unit is about £22.99, with 2.5 from 24, and it prints 20–50 kHz. It is the best value in this set. The IP65 title is disputed, and a review says the stake was missing.
You want a single AAA unit and the cheaper of the two listings that share one review pool. The ISOTRONIC 70628 is about £32.45, with 2.6 from 6,144, the same texts as the £41.01 two-pack. Do not add those counts. There is no kilohertz figure and no IP code.
The top pick is the ISOTRONIC 92405 at about £32.45, with 2.6 from 2,112 reviews, the largest separate sample in this comparison. That score means a better-documented listing, not a device that clears pigeons. A review says the instructions limit outdoor range to about 4 m against a 50 m² listing line, and the electromagnetic claim is a seller line. The best value is the bergxperten solar unit at about £22.99, with 2.5 from 24, the lowest price among listings with 20 or more reviews and a printed 20–50 kHz band. The IP65 title is disputed in a review. The £9.99 pair has no reviews, so it is not the value pick.
bergxperten solar IP65
Lowest price among listings with 20 or more reviews, about £22.99, with a printed 20–50 kHz band.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK and wildlife sources from the digest, retrieved 16 October 2026. Shelf prices, stars and review counts are the amazon.co.uk lines in the eleven listings. Prices move. This is not a laboratory test.
This page contains affiliate links to amazon.co.uk. A qualifying purchase can earn us a commission at no extra cost to you. Scores use the star line, the printed spec, the shelf price in this comparison and the bird-review signal. They are not a laboratory test.
