The best Aphid killers, compared.
Top pick: Provanto Smart Bug Killer, twin 1 L – Names flupyradifurone, contact and systemic action, and an up to 8-week aphid claim, at about £12.00 with 4.6 from 71 reviews. Best value: SB Plant Invigorator 500 ml – About £8.53 with 4.1 from 2,429 reviews, the largest count in the set, and a listing that states no harvest interval. Updated October 2026.
An aphid killer is a garden product you buy in the UK to reduce greenfly and blackfly on roses, vegetables, houseplants and fruit trees. It is not one tool. A contact or physical spray has to wet the insect and stops once the film dries. A systemic spray is taken into the plant and is sold with a longer feeding-stop claim. A glue band blocks insects crawling up a trunk. A yellow card catches winged insects and does not clear a wingless colony on the leaves. You tell a suitable product apart by mode of action, the crop on the label, and the harvest interval before you pick food. A title that says vegetables is not a number of days. Use an authorised amateur product at the label rate. Do not treat the category as bee-safe: where a bee phrase applies, do not spray plants in flower or where bees are foraging. The Royal Horticultural Society still says to squash a light colony before you spray. Trade-offs are in the [aphid killer buying guide](/hub/pest-control/aphid-killer/sub/aphid-killer-buying-guide).
An aphid killer is a garden product you buy in the UK to reduce greenfly and blackfly on roses, vegetables, houseplants and fruit trees. It is not one tool.
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Personal buying guide
Question 1 of 2
Where is the pest?
The Provanto Smart Bug Killer twin pack lists at £12.00 for two 1 litre ready-to-use bottles, with flupyradifurone named on amazon.co.uk and a claim of contact and systemic action against aphids for up to 8 weeks. The star line is 4.6 from 71 reviews, and the texts are short. One buyer says it killed some aphids but not all. That sample is too thin to treat the 8-week line as confirmed in real gardens, but the listing is the clearest match in this set when you want residual aphid control on a labelled crop. The bullets allow ornamentals and edibles outdoors, in greenhouses and under glass. This listing does not print a harvest interval, so you must read the bottle before you pick salad leaves. A separate single 1 litre Smart listing at £5.99 with thousands of reviews is a cheaper marker on the same product line, not a row in this comparison. It is the top pick here for hidden aphids on a plant the label allows, not for spider mite.
Pros
Cons
Best for: You want systemic-style cover on aphids the label allows, you can wet the plant as the label describes, and you will read the bottle for harvest days before you eat the crop.
Less suitable: You need a printed harvest wait on the amazon page itself, you are fighting spider mite, or you only want a short contact knockdown without residue in the plant.
Specifications
Common questions
What active does this listing name?
Flupyradifurone. The bullets say contact and systemic action, aphids among the targets, and up to 8 weeks against aphids.
Can it be used on vegetables?
The bullets say ornamentals and edibles, outdoors, in greenhouses and under glass. This listing does not print a harvest interval.
Do the reviews confirm an 8-week result?
The rating is 4.6 from 71 reviews. The texts are short. One says it killed some but not all. They do not record an 8-week check.
Provanto Ultimate Bug Killer arrives as two 1 litre ready-to-use sprays for £9.98, with contact action and an up to 2 weeks claim on the listing. The amazon.co.uk line is 4.6 from 58 reviews, but only eleven texts sit behind that aggregate, so the stars look stronger than the evidence you can read on the page. The bullets say most common plant pests and more than 50 crops, yet aphids appear as a customer question rather than in the bullet list. Retailer label text for the Ultimate product line names deltamethrin and gives crop tables with day counts; the twin-pack listing does not print that active, so you treat the bottle as the source. One reviewer still had a few bugs and was respraying inside the 2-week window. For roughly £2 less than the Smart twin pack you get contact cover and two full litres, which suits a visible infestation you can wet directly, provided you accept shorter residual claims and you verify the label for edibles.
Pros
Cons
Best for: You can see aphids on the leaves, you want two litres of contact spray for repeated jobs, and you will read the Ultimate label on the bottle for crops and intervals.
Less suitable: You wanted 8-week systemic aphid cover, you need aphids named clearly on the amazon card, or you will not check a separate label for harvest days.
Specifications
Common questions
Does the listing name aphids?
Aphids appear as a question on the page. The bullets say a contact killer for most common plant pests, including box tree caterpillar, not the word aphid.
How long does the listing say it lasts?
Up to 2 weeks. One of 11 review texts still had a few bugs and was respraying. Most of the others only say it works.
Can it be used indoors?
The title says indoor and outdoor plants. It is a ready-to-use spray with a twist-and-lock nozzle. No harvest interval is printed on the listing.
The Provanto Smart Bug Killer concentrate is 100 ml at £8.45, with bullets that say it makes 37.5 litres, gives up to 8 weeks of control, and also call the product pesticide-free on the same page. The listing does not name an active, while some retailer descriptions for this concentrate line mention flupyradifurone. Treat that conflict as a reason to read the bottle, not as a settled fact on amazon.co.uk. The rating is 4.4 from 81 reviews. One reviewer used it on ornamentals, houseplants and edibles without damage; another saw no progress. A separate comment says use is limited to once or twice a year at the lowest rate, which is reviewer interpretation rather than a bullet figure. Do not assume this bottle shares the ready-to-use Smart twin pack’s label table. It is a dilution job for someone who already owns a sprayer and will follow the concentrate instructions.
Pros
Cons
Best for: You already spray from a tank, you accept label reading on a concentrate, and you want many litres from one small bottle for repeated beds.
Less suitable: You wanted a ready-to-use trigger, you need a clear active name on the page before purchase, or you are uneasy about pesticide-free wording on a pest-control product.
Specifications
Common questions
Is this the same as the flupyradifurone ready-to-use spray?
The listing does not name an active. It says contact, up to 8 weeks, and pesticide-free. Do not copy flupyradifurone from the other Provanto Smart listing.
Can it be used on vegetables and houseplants?
The bullets say ornamentals, houseplants and edibles. A review used it on those and reported no damage. Another saw no progress.
How often can it be used?
One reviewer said it can be used only once a year, or twice at the lowest rate, and that this did not cover the season. That limit is the review, not a figure printed in the bullet list.
Seedzbox glue bands are two 1 metre trunk barriers at £11.99, rated 4.3 from 39 reviews. They are not a spray: they block crawling insects on the bark. The seller card mentions winter moth from October to April and ant activity from May to August, with fitting at 45–60 cm above the soil, sticky side out, and replacement after six months. One cherry-tree review says the band stopped ants farming aphids on the trunk, which is a different problem from greenfly already coating the shoots. The listing asks about weatherproofing and reusability without answering clearly. Weight is 70 g for the pair. RHS guidance for grease bands focuses on winter moth timing and non-target wildlife; this product widens the ant window beyond that RHS note. Use it when the pest path is up the trunk, not when the colony lives only in the canopy.
Pros
Cons
Best for: You have a fruit tree and want to block crawling pests or ant highways on the trunk within the seller’s calendar.
Less suitable: Aphids are only on soft growth, you need greenhouse spray cover, or you cannot tie a band at 45–60 cm on a young whip.
Specifications
Common questions
Do these bands kill aphids on the leaves?
They are a trunk barrier. One review said they stopped ants farming aphids on a cherry. They do not spray a colony already in the canopy.
Can they be reused?
The instructions say remove the bands and replace them after 6 months. The listing asks if they are reusable and does not say yes.
Are they weatherproof?
The listing asks the question and does not give a weather rating. Weight is 70 g for the pack of two.
BestTrap yellow sticky cards come as twenty dual-sided sheets, 15 by 20 cm, at £8.98, with 4.2 from 1,705 amazon.co.uk reviews. The bullets name winged aphids among flying pests and say the glue is insecticide-free, with twist ties included. Most of the long review history discusses fungus gnats, flies and whitefly rather than aphid colonies on stems. An allotment review still had aphids on the plants after the cards filled up, which matches how traps work: they monitor and catch flyers, they do not clear wingless greenfly on new growth. One indoor review caught nothing in a week. Hang them beside houseplants or in a greenhouse when you want a visual count, not when you expect the cards alone to finish an aphid job.
Pros
Cons
Best for: You want to monitor flying insects in a greenhouse or by houseplants and you will still treat colonies on the foliage separately.
Less suitable: You wanted one product to kill aphids on vegetables this week, or you cannot tolerate by-catch of non-target insects on the sticky surface.
Specifications
Common questions
Do the cards contain insecticide?
The bullets say the sticky surface is insecticide-free. Twist ties are included.
Will they clear aphids on a plant?
The bullets name winged aphids. An allotment review still had aphids on the plants after the cards filled up. Most of the long review set is about flies and fungus gnats.
Can they be used indoors?
Reviews hang them by houseplants and windows. One review caught nothing in a week. The rating is 4.2 from 1,705 reviews.
SB Plant Invigorator is the best value physical option in this comparison at £8.53 for 500 ml, with 4.1 from 2,429 amazon.co.uk reviews. That review count is the largest in the set by a wide margin, even though the star line is lower than the 4.6 Provanto packs with fewer texts. The bullets list aphids, whitefly, spider mite and mealybug, and they state no harvest interval, with biodegradable and non-toxic lines that are seller wording rather than an independent assessment. No chemical active is named on the listing. Reviews are mixed: one buyer cleared brassica aphids but called the bottle expensive, another killed only part of a mint colony because the jet was coarse. A thyme plant curled after spraying, then the reviewer said mites were gone after three weeks. Caps have leaked in comments. You must wet both leaf sides to run-off and repeat after heavy infestations, because the action is contact and physical once the spray dries.
Pros
Cons
Best for: You will eat the crop and the label’s no-interval line matches your risk, you can respray and soak both sides of the leaf, and you want a large review history before you spend.
Less suitable: You will not repeat sprays, you need a printed systemic residue, or you are treating only spider mite on roses where reviews on other soaps dominate.
Specifications
Common questions
Does it kill aphids?
The bullets list aphids. One review killed some, not all, on mint because the jet was coarse. Another cleared brassica aphids and called it expensive.
Is there a harvest interval?
The bullets say no harvest interval, and that it is biodegradable and non-toxic. No chemical active is named on the listing.
Is it safe for indoor plants?
Reviews use it on orchids and indoor thrips. One thyme plant curled its leaves, then the reviewer said the mites were gone after three weeks.
Ready Steady Defend sells a 1 litre insecticidal soap at £14.99, with potassium salts and soya oils named and contact action against aphids, whiteflies and spider mites in the bullets. The amazon.co.uk rating is 3.9 from 47 reviews, the weakest star line among the sprays here. Saved comments lean toward spider mite on houseplants, including a failure on mini roses, rather than aphid-heavy feedback. The seller line says fruits, vegetables and berries are safe right up until harvest, which is not the same as a numbered harvest interval from a regulator. Contact soap has no residual once dry; one review said red spider mites returned after the film dried. You reapply as the listing suggests. At nearly fifteen pounds for a litre it is the dearest ready-to-use spray in the set, so it needs to match a soap job you can reach with a wetting spray, not a systemic aphid colony inside curled leaves.
Pros
Cons
Best for: You want a named soap spray for visible pests on listed crops and you will reapply when the leaves dry.
Less suitable: You wanted the aphid top pick on value or stars, you need systemic reach into curled foliage, or you will not re-spray after drying.
Specifications
Common questions
Does this spray list aphids?
The bullets say it controls aphids, whiteflies and spider mites. The reviews are mostly about spider mite, including a failure on mini roses.
Can it be used on fruit and vegetables?
The listing names fruits, vegetables and berries and says it is safe up to harvest. That harvest line is the seller’s text, not a numbered interval.
Is it systemic?
No. It is a contact insecticidal soap. A review said red spider mites returned once the spray had dried.
UK Grow Aphid Assassin is a 1 litre ready-to-use spray at £12.99, titled for edible crops, with 3.8 from 61 reviews. The active field on amazon.co.uk repeats the product type and does not name a chemical, which makes label comparison harder than on the Provanto or SB bottles. Reviews split: an apple tree cleared after a drench, while chilli and olive owners reported aphids back within a day or two. A chilli review also said the plant was still being eaten. No harvest interval appears on the listing. The title’s edible-crop line is marketing until you read whatever statutory label arrives with the bottle. In this set it sits below the Provanto and SB options on both stars and transparency, so treat it as a last resort when you accept that gap.
Pros
Cons
Best for: You already bought it and will read the physical label on delivery before use on food plants.
Less suitable: You are choosing fresh today and want a named active, strong review proof, or a clear harvest wait on the listing.
Specifications
Common questions
What is the active substance?
The active field repeats the product type and does not name a chemical. The model field does the same.
Does it clear a heavy aphid attack?
Reviews split. An apple tree was cleared after a drench. A chilli and an olive still had aphids within a day or two.
Can it be used on vegetables?
The title says edible crops. A chilli review said the spray did not stop the plant being eaten. No harvest interval is given.
Eight amazon.co.uk listings are scored on mode of action, whether the tool can reach the insect, crop and harvest clarity, a named active or an honest gap, review count beside the star line, and pack price for that job. There is no laboratory garden trial. Two listings share the top display score. The top pick is the one that names a systemic active and aphids. Best value is the ready-to-use physical spray with the largest review count under £10, not the cheapest row and not the shortest star line.
Mode of action and reach
30%A contact or physical spray has to wet the insect and stops when it dries. A systemic listing is scored for a claim of action inside the plant. A band or a card does not clear a colony already on the leaves.
Crop and harvest clarity
25%A title that says vegetables is not a number of days. Points come off when the listing names edibles but prints no harvest interval, or when seller text is the only wait line.
Named active or an honest gap
20%A named active on the amazon.co.uk listing scores above a blank active field. A page that says pesticide-free and an 8-week feeding stop together is marked down.
Stars with review count
15%amazon.co.uk stars count only with the review count on that listing. A large count is not treated as weaker than a 4.6 from a few dozen reviews. There is no laboratory result.
Pack price for the job
10%Shelf price is judged against pack size and whether you must mix. A longer residual claim is worth paying for only when the pest is in the plant. A card or a band is a different job.
Start with where the insects are, then the mode of action, then the crop and harvest interval. A contact or physical spray has to wet the pest and stops when it dries. A systemic spray is the type sold for a longer feeding-stop inside the plant. A glue band and a yellow card do not clear a colony already on the leaves. Shelf prices captured on 20 October 2026 run from about £8.45 to about £14.99. Nothing on this page is a laboratory garden trial.
An aphid killer on a UK listing is a spray, a concentrate, a glue band or a yellow sticky card sold against greenfly and blackfly. Contact and physical sprays must wet the insect. They stop when they dry, so a repeat is part of the job. A systemic spray is the type that claims action inside the plant. In this set that claim is up to 8 weeks against aphids, and only one ready-to-use listing names the active flupyradifurone. Glue bands and yellow cards do not clear a colony already on the leaves.
Aphids sit on undersides and in curled growth. A coarse jet that misses those surfaces leaves the colony in place. Contact and physical sprays have to wet the insect. They do not keep working after the film dries.
Glue bands block crawlers on the bark. Yellow cards catch winged insects. Neither clears wingless greenfly already on the shoots. The Royal Horticultural Society also notes that grease bands miss flying moths and catch other insects.
The Health and Safety Executive says use an authorised amateur product and follow the label. Do not mix a stronger dose. A title that says edible crops is not a harvest interval. Professional packs are not for untrained gardeners.
Contact and physical sprays must wet the insect and stop when they dry. Systemic flupyradifurone, named on the Provanto Smart twin pack, is the listing that claims action inside the plant for up to 8 weeks against aphids. The Ultimate twin pack is contact, with an up to 2 weeks claim, and its amazon fields do not name an active. The Smart concentrate says contact, up to 8 weeks, and pesticide-free on the same page, and it does not name an active.
A title that says vegetables is not a number of days. Tesco label text for Provanto Smart ready-to-use gives 3 days on glasshouse fruiting vegetables and 14 days on outdoor apple, one spray, not before flowering. The twin-pack listing in this set does not print that interval. SB Plant Invigorator and the soap claim no harvest wait. Read the bottle. The Smart twin pack lists flupyradifurone. A retailer page for the Ultimate line names deltamethrin at 0.0075 g/l.
Three typical situations, each with a recommendation from this comparison.
You will eat the crop and you need a harvest position before you spray. SB Plant Invigorator is about £8.53 for 500 ml, with 4.1 from 2,429 reviews, and the bullets state no harvest interval. That line is seller wording, so read the bottle. It is a weaker match if you will not respray, or if you need a named systemic active in curled leaves.
Many houseplant reviews in this set are about spider mite, thrips or fungus gnats as well as aphids. Ready Steady Defend is about £14.99 for 1 litre, with 3.9 from 47 reviews, and it names potassium salts and soya oils. You have to reapply once the spray dries. Skip it if you wanted the largest aphid review count or systemic cover inside curled leaves.
You have a fruit tree and the pest path is up the bark, including ants farming aphids, or winter moth in the seller’s October to April window. Seedzbox is two 1 m bands at about £11.99, with 4.3 from 39 reviews, fitted at 45–60 cm. The band does not clear greenfly already on the shoots. If the colony is only on soft growth, use a labelled spray instead.
The top pick is Provanto Smart Bug Killer, twin 1 L, at about £12.00. It shares the highest display score with the Ultimate twin pack, and it is the listing that names flupyradifurone, contact and systemic action, and up to 8 weeks against aphids, with 4.6 from 71 reviews. The review texts are short, one buyer said some aphids survived, and the page does not print a harvest interval. The best value is SB Plant Invigorator 500 ml, at about £8.53, with 4.1 from 2,429 reviews. That is the largest review count in the set, on a ready-to-use spray whose listing states no harvest interval. You still have to wet the insect and repeat after it dries. A 4.6 from 58 reviews on the Ultimate twin pack is not a laboratory win over that larger sample.
Provanto Smart Bug Killer, twin 1 L
Names flupyradifurone, contact and systemic action, and an up to 8-week aphid claim, at about £12.00 with 4.6 from 71 reviews.
SB Plant Invigorator 500 ml
About £8.53 with 4.1 from 2,429 reviews, the largest count in the set, and a listing that states no harvest interval.
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 eight listings on 20 October 2026. Last checked 22 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 eight products on 20 October 2026. We did not run a laboratory garden trial.
