The best Mosquito plugs, compared.
Top pick: OUWEWIN USB 90 tablets Best value: ABL Supplies liquid 1-pack – About £6.99 for one stated 35 ml bottle and the same 45-night claim, with 3.7 from 95 reviews. The formula and the pin gap match the two-pack. Updated October 2026.
A mosquito plug is a small heater that vapourises a liquid bottle or heats a tablet against mosquitoes in one closed room. UK buyers use one overnight in a bedroom, a hotel, or a campervan. It is not a UV grid, not an ultrasonic plug, and not a skin patch. A coil stays outdoors. You recognise a suitable unit by the substance, the fill, the night claim, and the socket. Prefer a named ingredient. A chemical-free line is a slogan until the label names the bottle or the tablet. UK sockets are BS 1363 at 230 V. A two-pin body will not seat, and a shaver adaptor has the wrong pin spacing. A USB heater needs 5 V and is not a 13 A plug. One unit is one closed room. If the page prints no active substance and no HSE number, do not call it approved. Liquid or tablet, and mains or USB, are in the [mosquito plug buying guide](/hub/pest-control/mosquito-plug/sub/mosquito-plug-buying-guide).
A mosquito plug is a small heater that vapourises a liquid bottle or heats a tablet against mosquitoes in one closed room. UK buyers use one overnight in a bedroom, a hotel, or a campervan.
18 products checked · 54 hrs invested · +16,800 readers
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Personal buying guide
Question 1 of 2
What power do you have?
OUWEWIN lists two USB heaters and 90 tablets at £11.28, with a 20-foot claim, about 6 metres, and seller text that the tablets are plant-based, colourless and suitable for pregnant women and babies. Amazon.co.uk shows 4.1 from 18 reviews. The two UK reviews are both complaints: one heater stopped after two days, and one night left mosquitoes still flying in the morning. No oil is named, so the plant-based line is a slogan rather than a formula. Power is USB from a computer, a power bank or a car port, not a British mains plug. The tablet count is the largest in the set. The written evidence that it works overnight is the thinnest.
Pros
Cons
Best for: A spare USB heater in a bag only if you will stop on the first night the plate stays cold.
Less suitable: A bedroom for a pregnant person or a baby, and anyone reading 4.1 as if it were a large sample.
Specifications
Common questions
Is this a mains mosquito plug?
No. The listing says USB, for a computer, power bank or car port.
Does the listing prove it is safe in pregnancy?
It says suitable for pregnant women and babies and plant-based. It does not name a substance or an authorisation number.
How many reviews describe a failure?
The listing shows 4.1 from 18 reviews. The two UK reviews are a heater that failed after two days, and a night that left mosquitoes flying.
AOOWU sells one USB tablet heater and 30 tablets at £7.99, with 3.8 from 166 amazon.co.uk reviews and a seller claim of a 20-foot zone. Reviews describe use in a van, with a power bank when a hotel cuts the power, and a unit that gets warm, which is what a tablet heater has to do. One Southeast Asia trip is reported with no mosquitoes after it was started. The listing names no ingredient, and a reviewer says composition, safety and disposal text were missing. Another describes a strong vapour that numbed the face when the only USB port was beside the bed, and overheating they called dangerous. Units stopped after about three weeks in one review and after 12 hours in another. It is a USB option for a closed small space, not a BS 1363 mosquito plug, and the tablets are unlabelled on the listing.
Pros
Cons
Best for: A campervan or a hotel USB port in a closed space, if you accept an unnamed tablet and you will not park it by a pillow.
Less suitable: A UK bedroom that needs a labelled insecticide, or a socket that sits next to your face.
Specifications
Common questions
Does the AOOWU unit need a wall socket?
The listing says USB, including a computer, power bank, wall charger or car charger. It is not a BS 1363 plug.
What is on the tablets?
The listing does not name an ingredient. A review says composition and disposal text were missing.
What area does the seller claim?
The listing claims a 20-foot zone. It does not state hours per tablet.
This ABL Supplies one-pack is a single heater and one 35 ml oil bottle at £6.99, with the same claim of up to 45 nights and the same chemical-free wording next to a kill claim. Amazon.co.uk shows 3.7 from 95 reviews, a thinner sample than the two-pack and still enough to repeat the plug complaint. A Greece trip is reported with no bites and no pungent smell, and one buyer says they reorder every year and switch the unit off during the day. Reviews say it is a two-pin plug that will not go into a BS 1363 socket. One bottle arrived leaked and short of liquid. Another unit failed on first use because a wire was too short to reach the switch terminal. The listing does not name an ingredient. It is the best value row here as the lowest shelf price for a stated 35 ml liquid, with the same formula and pin gaps as the dearer twin.
Pros
Cons
Best for: One closed room on a short trip when you already own a fused travel adaptor and you only need a single bottle.
Less suitable: A UK bedroom that needs a stated BS 1363 body, or a first order where you want a spare bottle in the box.
Specifications
Common questions
Will this single ABL plug fit a UK socket?
The specification does not say. Reviews say it has a two-pin plug.
How much liquid is in the pack?
The listing says 35 ml, one refill and one plug, with a claim of up to 45 nights. One review says the bottle arrived low and had leaked.
Does the listing name the ingredient?
No. It says unscented oil and also says chemical-free, without an active substance or an HSE number.
The Xpel listing is titled as a mosquito and insect plug-in, 2 pack, at £7.49, and amazon.co.uk shows 3.6 from 374 reviews, the largest count in this set. The item-form field says Patch and a bullet says 1 x plug, while reviews describe liquid bottles and a level you can watch fall. Some buyers did receive two units and called the price fair. Others say only one unit arrived. A Spain holiday review reports no bites in that room while the next room was bitten, and a Cape Verde review reports heavy biting over five nights. Bottles leaked because caps were loose, including in a suitcase, and the body is described as two-pin and loose in the socket. A reviewer warns that a UK shaver adaptor has the wrong pin spacing. No duration, coverage or active substance is printed, and the page does not agree with itself about what is in the box.
Pros
Cons
Best for: A buyer who will check the box on arrival and who already has a Euro-to-UK adaptor that is not a shaver adaptor.
Less suitable: Anyone who needs the listing to match the product in the box, or a UK socket with no proper adaptor.
Specifications
Common questions
Is the Xpel listing a liquid plug or a patch?
The title says plug-in, 2 pack. The item-form field says Patch, and a bullet says 1 x plug. Reviews describe liquid bottles.
Does it come with a UK plug?
The listing does not say. Reviews describe a two-pin plug and warn that a shaver adaptor has the wrong pin spacing.
How many units are in the box?
The title says 2 pack and the size field says 2 count. A bullet says 1 x plug, and some reviews say only one unit arrived.
The ABL Supplies two-pack puts two mains heaters and two 35 ml oil bottles in one order, 70 ml in total, at £12.49 with a claim of up to 45 nights per refill. Amazon.co.uk shows 3.6 from 310 reviews, a large enough sample to sit beside the gaps on the page. Some buyers report fewer flying biters indoors, including on a Mauritius trip, and a slight smell they compare with new paint. Several reviews say each body is a two-pin Euro plug and needs an adaptor before it will enter a BS 1363 socket. A West Africa review describes six weeks with almost no drop in the liquid, only slight warmth, and continued bites. One unit would not switch on and could not be sent back from abroad. The bullets say chemical-free and also say the liquid kills insects, and the listing names no active substance or HSE number. Inside this set it is the top pick because the volume, the night claim and the review count are stated, not because the formula is known.
Pros
Cons
Best for: A second room or a travel bag when you already have a proper UK adaptor and you want a spare 35 ml bottle in the same order.
Less suitable: A British socket with no adaptor, and anyone who needs a named insecticide on the label before they sleep next to the unit.
Specifications
Common questions
Does this ABL two-pack include a UK 3-pin plug?
The listing does not state a BS 1363 plug. UK reviews say the units are two-pin Euro plugs and need an adaptor.
What is in the bottles?
The listing says two 35 ml oil bottles, 70 ml in total, unscented, with a 45-night claim. It does not name an active substance. It also says chemical-free and that the liquid kills insects.
Is bedroom use answered on the listing?
The page asks whether it can be used in bedrooms and does not print an answer.
Five amazon.co.uk vapour or tablet plugs were scored on 21 October 2026 after zappers, ultrasonic plugs, and skin patches were removed. There is no laboratory test. The top pick is the highest score: a stated liquid volume, a night claim, and a large review count. Best value is the lowest shelf price for one stated 35 ml bottle with the same night claim. A listing that disagrees with itself, or a 4.1 from 18 reviews, is marked down. None of these five pages prints an active substance or an HSE number.
Stated fill and duration
35%Points follow a stated bottle volume or tablet count, and a night claim when the listing prints one. An unnamed tablet, or a duration the page does not state, scores lower.
Review sample
30%amazon.co.uk stars count only with the review count on that listing. A 3.6 from 310 reviews ranks above a 4.1 from 18. This is not a measured knockdown rate.
Listing consistency
25%Points come off when the title, the item form, and the pack count disagree, when reviews describe a two-pin plug the page does not state, or when chemical-free sits beside a kill claim.
Shelf price
10%Shelf price is the amazon.co.uk figure captured for that listing. Best value is the lowest price for a stated 35 ml liquid with the same up-to-45-nights claim, not the cheapest USB tablet.
Start with the device type, then the socket, then whether the listing names a substance. A mosquito plug heats a liquid bottle or a tablet in one closed room. It is not a UV zapper, an ultrasonic plug, a skin patch, or an outdoor coil. Nothing on this page is a laboratory test, and none of the five listings prints an HSE number.
A mosquito plug is a small mains or USB heater that vapourises liquid from a bottle, or heats a tablet, against mosquitoes in one closed room. UK buyers use one overnight in a bedroom, a hotel, or a campervan where the power stays on. A UV grid, an ultrasonic plug, a coil, and a skin patch are different products. Coils stay outdoors. One heater is one closed room. It does not replace a net, screening, air conditioning, or a prescribed antimalarial, and it does not prevent malaria on its own.
Reviews describe the liquid bodies as two-pin, and warn that a UK shaver adaptor has the wrong pin spacing. Regulation 35 expects a device made for a BS 1363 socket to fit BS 1363. Forcing the pins is not a fix.
The night claim on the liquid packs is a seller line, and a neighbouring bullet also says up to 45 days. Branded instructions for this type use about one to two hours before bed in about 30 cubic metres. One plug does not cover a flat, and open windows are not a fair test of the bottle.
Chemical-free beside a kill claim, and plant-based or safe for babies with no oil named, are seller lines. None of the five listings prints an active substance or an HSE number. Do not sleep a pregnant person, an infant, or someone with asthma next to that gap.
Keep liquid bottles and heated tablets. A UV grid, an ultrasonic plug, a coil, and a skin patch answer a different search. UK sockets are BS 1363 at 230 V. A two-pin body will not seat. A USB heater needs 5 V and does not replace a 13 A plug. Prefer a named substance. The Health and Safety Executive treats insecticides as biocidal product type 18, and GB supply needs an authorisation it recognises. These five listings print no active and no HSE number.
Read the night claim and the fill: millilitres of oil, or a tablet count. About 30 cubic metres is the room figure on branded liquid instructions, not a 20-foot seller line. Switch on about one to two hours before bed. Do not treat 45 nights as a laboratory result, or as 45 days of continuous heat. Stars need the review count beside them. Three hundred reviews outweigh a 4.1 from 18. Captured shelf prices run from about £6.99 to about £12.49.
Three typical situations, each with a recommendation from this comparison.
You want a stated oil volume and a night claim, and you already own a proper Euro-to-UK adaptor. The ABL Supplies liquid 2-pack at about £12.49 states two heaters and two 35 ml bottles, up to 45 nights per refill, with 3.6 from 310 reviews. Reviews say the bodies are two-pin. The listing names no active substance. Skip it if you need a BS 1363 plug in the box, or a named insecticide before you sleep next to the unit.
You need a single bottle and you already have a fused travel adaptor. The ABL Supplies liquid 1-pack is about £6.99 for one heater and one 35 ml bottle, with the same up-to-45-nights claim and 3.7 from 95 reviews. A holiday review reports no pungent smell. Another bottle arrived leaked and low. It is a weaker match if you wanted a spare bottle in the same box.
You have USB power and no wish to force two pins into a UK socket. AOOWU is one USB heater and 30 tablets at about £7.99, with 3.8 from 166 reviews and a seller claim of 20 feet. The listing names no ingredient. Reviews include overheating beside a bed and heaters that died. The 90-tablet pack has more tablets and only 18 reviews.
The top pick is the ABL Supplies liquid 2-pack at about £12.49. It is the highest score: two heaters and two 35 ml oil bottles, 70 ml in total, a claim of up to 45 nights per refill, and 3.6 from 310 amazon.co.uk reviews. Reviews say each body is a two-pin plug. The listing names no active substance or HSE number, and chemical-free sits beside a claim that the liquid kills insects. The best value is the ABL Supplies liquid 1-pack at about £6.99, the lowest shelf price here for one stated 35 ml bottle and the same 45-night claim, with 3.7 from 95 reviews. It has the same pin gap and the same unnamed formula. A leaked bottle and a short switch wire are reported. None of these scores is a laboratory test.
ABL Supplies liquid 1-pack
About £6.99 for one stated 35 ml bottle and the same 45-night claim, with 3.7 from 95 reviews. The formula and the pin gap match the two-pack.
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 sources used for this comparison. Shelf prices, stars and review counts are the amazon.co.uk figures captured for these five listings. Last checked 21 October 2026.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are the UK listing lines captured for these five products. We did not run a laboratory test.
