The best fire extinguishing sprays, compared.
Top pick: Super Help Fire Stop 400 ml – Lowest shelf price with 4.6 from 2,753 reviews, and a maker sheet that rules out electrical installations. No printed class rating. Best value: Kidde Flame Out 500 ml – Next price that names grease, wood, paper and waste and states it does not replace a BS EN 3 extinguisher. No review line, and not a claim that about £18.37 is cheap. Updated October 2026.
A fire extinguishing spray is a small single-use aerosol, usually 400–500 ml, for a fire that is still limited in size. People keep one in a cupboard, a car or a caravan. It does not replace workplace fire-fighting equipment, and BSI’s summary of BS 6165 says an aerosol of this type is unlikely to be enough on its own. If the fire is not obviously small, or smoke fills the room, leave and call 999. Class, standard and expiry are set out in the [fire extinguishing spray buying guide](/hub/fire-protection/fire-extinguishing-spray/sub/fire-extinguishing-spray-buying-guide). The cans in this shortlist are about 400–500 ml. A workplace still needs equipment under the relevant fire-safety law. In England and Wales, the (Fire Safety) 2005, article 13, requires appropriate fire-fighting equipment where necessary.
A fire extinguishing spray is a small single-use aerosol, usually 400–500 ml, for a fire that is still limited in size. People keep one in a cupboard, a car or a caravan.
18 products checked · 47 hrs invested · +16,200 readers
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Personal buying guide
Question 1 of 2
What do you want the can for?
The Super Help Fire Stop SH2400 is a 400 ml can listed at about £11.99 and 530 g, and the amazon.co.uk line is 4.6 from 2,753 reviews, which is why it is the top pick on this shortlist. The written reviews are mostly from people who have not had a fire, and they praise the size for a car, camper or caravan. One reviewer reports a campervan battery fire put out in seconds, and that is a single report, not a class rating. The listing does not print a fire rating, and the maker’s technical sheet says the spray is not for electrical installations. UK reviews say that warning is on the bottle and was easy to miss in the description. The listing says a bracket is included. If the can does not put a small fire out, you leave, because 2,753 stars are not a fire test.
Pros
Cons
Best for: You want a small spare in a car or caravan, and you will read the “not for electrical fires” line on the can before you rely on it.
Less suitable: You need a stated electrical rating or a Class F mark, or you are buying the only equipment for a workplace risk assessment.
Specifications
Common questions
Can this Super Help can be used on an electrical fire?
The amazon listing does not print a class rating. UK reviews of this ASIN say the bottle itself says it is not suitable for an electrical fire, and that the warning was easy to miss in the description.
Does it come with a bracket?
The listing says the can comes with a bracket to secure it. Review text does not add a second measurement of the bracket.
What do the 2,753 reviews actually say?
The first 50 UK reviews are mostly from people who have not had a fire. They praise the size for a car or camper. One review reports a campervan battery fire put out in seconds. That is one report, not a rating.
This second Super Help listing is the same SH2400 model, 400 ml and 530 g, at about £12.98 rather than about £11.99. amazon.co.uk shows 4.5 from 145 reviews. Reviewers again say it is not for electrical equipment. One buyer says the picture showed a mount and the can that arrived did not have one, so the bracket named on the other listing is not confirmed here. One reviewer says the warnings are printed too small, across too many languages, to read. The package line is 26.3 × 7.3 × 7.1 cm. You pay about £1 more for a thinner review sample of the same unrated can.
Pros
Cons
Best for: This offer is the SH2400 that is actually in stock, and you already accept an unrated 400 ml spare.
Less suitable: You need the bracket the other listing mentions, or you want the larger review sample at about £11.99.
Specifications
Common questions
Is this the same can as the other Super Help listing?
The model number is SH2400 and the stated capacity is 400 ml, the same as B0075293WW. This ASIN is a separate amazon.co.uk offer at about £12.98 with 145 reviews.
Does this listing include a wall mount?
The listing does not say a bracket is included. One UK review says the picture showed a mount and the can that arrived did not have one.
Can you read the warnings?
One reviewer says the warnings are printed too small, across too many languages, to read. Other reviews do not measure the type size.
The PLEMO F62N is listed at about £12.99 with 4.4 from 39 reviews, and the bullets name wood, paper, oil, grease, gas or diesel, electronics and fabric. UK reviews say the can itself only mentions a wetting agent and does not show a fire class or a British Standard. That clash is why the all-fuel list should be read as advertising. The listing claims a 4-year life with dates on the base, and one reviewer recorded 3 September 2024 and 2 September 2028 on their can. Item weight is printed as 840 g while another line says 760 g, and reviewers put the fill at about 620–630 ml, which the title does not state. There is no bracket; one reviewer measured about 320 mm by 65 mm and wanted a wall mount that was not in the box. A claimed range of 4.5 m and a 1 m stand-off sit on the listing, not in a fire test we ran.
Pros
Cons
Best for: You are comparing a cheap cupboard can, and you will trust the wording on the bottle rather than the all-fuel bullet.
Less suitable: You want a stated class rating, a wall bracket, or a fuel list that matches the can.
Specifications
Common questions
Does the can say what is inside?
The listing claims trash, wood, paper, cooking oils, grease, gas/diesel, electronics and fabric. UK reviews say the can itself only mentions a wetting agent and does not show a fire class or a British Standard.
Is a bracket included?
No. One reviewer measured about 320 mm by 65 mm and wanted a wall bracket, which was not in the box.
How long does the listing say it lasts?
The bullets say a 4-year life, with manufacture and expiry dates on the bottom. One reviewer recorded 3 September 2024 and 2 September 2028 on their can.
The Kidde Flame Out KFS-500 is a 500 ml water-based spray listed at about £18.37, 500 g and 25.1 cm tall, and the amazon.co.uk listing has no review line, so the stars are n/a. The bullets name grease, wood, paper and household waste, and they tell you to take off the cap, aim at the source and spray. They do not print a class number such as 5F. Kidde’s user guide says this spray does not replace a BS EN 3 extinguisher, and published notes on the KFS-500 put the discharge at about 30 seconds with a throw of about 1.5–1.8 m, keeping at least 1 metre away. The listing claims a PFAS-free agent, a 2-year warranty and a tamper-evident cap. “Safe around children and pets” is a claim about the agent, not a reason for a child to handle the can. It carries the best value mark only because the cheaper Super Help already holds the top pick: about £18.37 is the next price that adds a named fuel list and a written limit, and you still have no review count.
Pros
Cons
Best for: You want a named-brand can for wood, paper and waste, and you will read the “not a replacement for EN 3” line before you treat it as household equipment.
Less suitable: You need a printed class rating, an amazon review record, or a stated limit for live electrics.
Specifications
Common questions
What fires does the Kidde listing name?
The amazon bullets name grease, wood, paper and household waste. They also say to take off the cap, aim at the source and spray. They do not print a class rating such as 5F.
Is there an amazon star rating?
The listing has no customer-review line for this ASIN, so the rating is n/a. Price on that listing is about £18.37.
Does the listing say it is safe around children?
The listing says the PFAS-free water-based agent is non-toxic and environmentally safe to use around children and pets. That is a claim about the agent, not a statement that children should handle the can.
The Firechief Lith-Ex pack, model FLE500, is two 500 ml aerosols at about £69.96 and 1.38 kg, and the amazon.co.uk listing has no review line. The listing limits lithium-ion batteries to 60 Wh, with phones, chargers and laptops as examples, and it also names class A fuels such as paper, wood, textiles and cardboard. The maker’s sheet prints fire rating n/a and treats under 60 Wh as a guide, and it says the can is manufactured in accordance with BS 6165:2019, which is the maker’s statement rather than a Kitemark verified here. You pull the yellow loop and press the handle. A single Lith-Ex 500 ml was £40 at Wickes that day, so this amazon price is a twin pack, not a one-can price. It is the wrong buy for an e-bike or any battery above that 60 Wh guide, and it is a poor spare if you only wanted an about £12 can for a car.
Pros
Cons
Best for: You charge one phone or laptop under 60 Wh, and you want a can that states that limit on the listing.
Less suitable: You need one cheap general spray, or the battery is an e-bike, an e-scooter, or larger than 60 Wh.
Specifications
Common questions
Which batteries does this pack claim to cover?
The listing says lithium-ion batteries up to 60 Wh, with laptops and phone chargers as examples. It does not say every battery type.
Is it only for batteries?
The same bullets say it is also for class A fires in paper, wood, textiles and cardboard. No numerical fire rating is printed in the technical table.
How do you set it off?
The listing says pull out the yellow loop tag and press down with the handle, then aim, squeeze and sweep. There is no review text on the listing.
We kept five amazon.co.uk listings dated 19 October 2026 and scored them from review evidence, published limits and shelf price. The weights are 40, 35 and 25. A score is not a laboratory fire test, and a star rating is not an extinguishing result.
Amazon evidence
40%Star rating scaled by review count. Written UK reviews count for more than a star line with no text. A sample of people who never discharged the can is not a fire test. A label that reviewers say contradicts the bullets comes off this block.
Published limits
35%A printed fire rating or an honest gap, a named fuel or a do-not-use line, a standard or a written note that the spray does not replace BS EN 3, and a capacity, discharge, battery limit or expiry you can check.
Value
25%Shelf price in GBP against a stated job and a real review line. The lowest price does not win when the listing duplicates a cheaper offer, or when reviewers dispute what is in the can.
You are choosing a can for a fire that is still small, not a cylinder for every room in a workplace. Start with the fuel, then the standard, then the line that says what the spray must not touch. Price comes after those three, because the cheapest listing and the second Super Help offer are the same SH2400 model. The scores on this page use amazon.co.uk evidence, maker limits and shelf price on 19 October 2026. They do not come from a fire we lit.
A fire extinguishing spray, in the UK, is a small single-use aerosol meant for a fire that is still limited in size. The cans in this shortlist are about 400–500 ml. People buy one for a cupboard, a car or a caravan because the can is light. A workplace still needs equipment under the relevant fire-safety law. In England and Wales, the Regulatory Reform (Fire Safety) Order 2005, article 13, requires appropriate fire-fighting equipment where necessary.
A spray and a conventional portable are different products. Kidde’s guide says Flame Out does not replace a BS EN 3 extinguisher. BSI’s BS 6165 summary says a small aerosol is unlikely to be enough on its own, including at work.
Super Help’s 4.6 from 2,753 reviews is a large sample of people who mostly never discharged the can. One campervan report is one report. Stars do not measure extinguishing performance.
PLEMO’s listing names many fuels. Reviewers say the can itself only mentions a wetting agent and shows no fire class. Do not refill. A handbook quoting BS 6165 says not to be refilled, with expiry no later than the end of the fifth year after filling.
A fire extinguishing spray is only as useful as the fuel it is marked for. Class A is wood, paper and textiles. Class B is flammable liquids. Class F is cooking oil. Electrical fires are not a letter class, and a lithium-ion phone or laptop is a cooling problem, not Class D. The line to read is a printed rating, not a list of fuels in the title. A result such as 3A 13B 5F is a test figure. Super Help and PLEMO do not show one.
The electrical line on the can decides whether a live appliance is even in scope. Super Help’s technical sheet says the spray is not for electrical installations, and reviewers of both SH2400 listings say the bottle carries that warning. A water-based can is for live equipment only if it is marked after a dielectric test, often up to 1,000 V at 1 metre. Kidde’s listing does not print that voltage. Switch the power off when you can. Storage and expiry are the next check. Do not refill.
Three typical situations, each with a recommendation from this comparison.
You want a can for a small fire in paper, wood or household waste, and you will not jet a pan of oil. Kidde names those fuels and says the spray does not replace a BS EN 3 extinguisher. There is no review line on this ASIN, and no printed class number.
You want a small spare and you will read the electrical warning and the storage temperature before you rely on it. The Super Help Fire Stop at about £11.99 has the largest review count here. The maker sheet says it is not for electrical installations, and it has no printed class rating.
You charge one phone or laptop under 60 Wh and you want that limit on the listing. The Firechief Lith-Ex pack states it. Leave if the battery is an e-bike or e-scooter, or if the room is full of smoke. The sheet prints fire rating n/a.
The shortlist is five cans, not a fire test. For a small spare in a car or caravan, the Super Help Fire Stop 400 ml leads on review evidence and price, provided you read the electrical warning on the bottle. If you want grease, wood, paper and waste named on the can, and a written line that the spray does not replace a BS EN 3 extinguisher, the Kidde Flame Out is the best value mark at about £18.37, with no amazon review count. A phone or laptop under 60 Wh is a different job: the Firechief Lith-Ex pack, not a £12 general can. A pan of oil, an e-bike battery, or a room full of smoke is a reason to get out and call 999.
Super Help Fire Stop 400 ml
Lowest shelf price with 4.6 from 2,753 reviews, and a maker sheet that rules out electrical installations. No printed class rating.
Kidde Flame Out 500 ml
Next price that names grease, wood, paper and waste and states it does not replace a BS EN 3 extinguisher. No review line, and not a claim that about £18.37 is cheap.
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 and amazon.co.uk listings named in the research digest, last checked on 19 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. Scores use listing details, review text and public UK sources. They are not a laboratory fire test.
