Householder with droppings along a wall
You have signs in the house, you will buy a tamper-resistant station, and you want the block with the largest review sample in this set. Ultra Power names station STV566, which is not in the box.
Rat poison comparison 2026
The best rat poisons, compared.
Top pick: Big Cheese all-weather blocks Best value: Rentokil Rodine grain bait – Lowest price at £7.10, and the only extract that states brodifacoum 0.0025% w/w. Updated 17.10.2026.
Rats along a skirting, in a shed or beside a bin store are a different job from insects in a kitchen. Rat poison here means a ready-to-use rodenticide for rats and, on these packs, mice: wax blocks, grain sachets or paste sachets. UK householders may use only packs labelled for the general public, and only where that label allows. Amateur anticoagulant bait goes inside a tamper-resistant station, and none of these five amazon.co.uk listings includes one. Second-generation anticoagulant rodenticides are not authorised in open areas or on waste dumps, so “outdoor” means in and around buildings, not a field. Judge a listing on a disclosed active, a form for damp or dry sites, a station you own, and a review record bigger than a handful of texts. Snap traps, empty boxes and ultrasonic plugs are outside this table. Station rules are in our [bait station guide](/hub/pest-control/rat-poison/sub/rat-poison-bait-stations). Rat poison is a ready-to-use rodenticide bait, not a trap, an empty box or a plug-in device. A larger tub is more poison stored in the house.
Rats along a skirting, in a shed or beside a bin store are a different job from insects in a kitchen.
16 products checked · 48 hrs invested · +21,400 readers
5 of 5: Best rat poisons compared
Swipe for more
1-2 of 5Best overall
Best value
8.6/10
9.1/10
7.7/10
5.8/10
8.8/10
∼ £16
∼ £10
∼ £14
∼ £16
∼ £7
4.6(499)
4.5(2,179)
4.5(513)
4.5(32)
4.3(797)
Personal buying guide
Which rat poison fits?
Question 1 of 2
Where will the station sit?
The best rat poisons in detail
Our view
The Big Cheese all-weather listing is the only product in this set that explicitly calls its blocks damp-proof, making it the clearest match for a station in a damp shed or exposed area around a building. It records 4.6 out of 5 from 499 reviews, the highest star figure here but on fewer reviews than Ultra Power. The listing names STV179 as the separate station and includes gloves with the blocks. However, the title claims two packs of 30 x 10 g while the specification gives 300 g, and one buyer says only one pictured pack arrived. The amazon.co.uk extract does not state the active ingredient. “Pet Safe” appears in the title, but the product still has to be kept away from children and animals inside the appropriate station. At £16.40, it is a conditional alternative for damp locations rather than the strongest all-round buy.
Pros
- Only listing in this set with an explicit damp-proof block claim
- 4.6 out of 5 from 499 reviews
- Gloves are included
- Names STV179 as the compatible separate station
Cons
- £16.40 is the highest bait price in this set
- Active ingredient is not stated on the amazon.co.uk extract
- Title pack count and specification weight conflict
- One review reports receiving one pack rather than the pictured two
Best for: A damp shed or an outdoor station, if you already own STV179 or an equivalent box.
Less suitable: A buyer who needs the active on the listing, or who is choosing on price alone.
Specifications
- Model
- Big Cheese all-weather blocks
- Brand
- The Big Cheese
- Price
- ∼£16
- Customer rating
- 4.6/5(499)
- Bait station
- Not included
- Station model
- STV179
- Use
- Indoor and outdoor
- Feed claim
- A few feeds
- Pack
- 2 x 30 x 10 g
- Gloves
- Included
- Damp claim
- Yes
- Title line
- Pet Safe
Common questions
Does Pet Safe mean a dog can eat the block?
No. Those words are in the title. The bullet says use station STV179 so children and pets do not reach the bait, and gloves are included.
Is the pack weatherproof?
The listing calls the blocks damp-proof and weather-resistant, for indoor and outdoor use. The station is still separate.
Why do the weight and the title disagree?
The title says a multi-pack of two times 30 x 10 g. The spec weight is 300 g, which is one pack. A review says a pictured two-pack arrived as one.
Our view
The Big Cheese Ultra Power pack supplies 15 blocks of 20 g for £10.42 and names STV566 as the separate station to use with them. Its 4.5-star line is supported by 2,179 reviews, by far the largest review count in this five-product comparison. Buyers repeatedly report that bait is taken from a station, although that does not show how many infestations were cleared. Several reviews describe waiting days rather than seeing an immediate result, and some mention an odour when the carcass could not be found. The amazon.co.uk extract does not state the active ingredient, so you would need to check the pack before use if that matters to your decision. The station is not included despite being named in the listing. On the available evidence, this is our top pick for someone who wants a widely reviewed block refill and is prepared to buy the correct station separately.
Pros
- 4.5 out of 5 from 2,179 reviews, the largest review sample in this set
- Clear pack format of 15 x 20 g blocks
- Names STV566 as the compatible separate station
- Listing covers indoor and outdoor use around buildings
Cons
- Active ingredient is not stated on the amazon.co.uk extract
- Bait station is not included
- Specification weight shows one 20 g block rather than the 300 g pack total
- Reviews describe delays of days and odour from inaccessible carcasses
Best for: A buyer who already has, or will buy, station STV566 and wants the most-reviewed block in this set.
Less suitable: Anyone who needs the active printed on the listing before they buy.
Specifications
- Model
- Big Cheese Ultra Power blocks
- Brand
- The Big Cheese
- Price
- ∼£10
- Customer rating
- 4.5/5(2,179)
- Bait station
- Not included
- Station model
- STV566
- Use
- Indoor and outdoor
- Feed claim
- One feed
- Pack
- 15 x 20 g
- Gloves
- Use gloves
Common questions
Does the Ultra Power listing include a bait station?
No. The bullet says to use station STV566 and that a tamper-resistant station is legally required. The included components are the blocks.
What active does the amazon.co.uk extract name?
It does not name one. The model number on the listing is STV568.
How many reviews are on the extract?
4.5 out of 5 from 2,179 reviews. Buyers praise take from a station and complain about a delay of days and about smell without a body.
Our view
Roshield is sold as a block refill for an existing bait-station set-up, with a £13.59 price and a 4.5-star rating from 513 reviews. The listing’s rank of 26 in Rodent Control suggests strong category visibility, but it is not evidence of effectiveness. Neither an active ingredient nor a compatible station model is stated on the amazon.co.uk extract. The pack quantity is also unresolved: the title says 700 g while the specification says 840 g. Some supplied review texts discuss a Roshield box rather than the poison blocks, which makes the rating less clean as evidence for this refill alone. No station is included. Consider it only if you already have a suitable lockable station and can confirm the active and pack weight from the product label on arrival.
Pros
- 4.5 out of 5 from 513 reviews
- Sold explicitly as a block refill
- Ranked 26 in Rodent Control on the listing
Cons
- Active ingredient and compatible station model are not stated
- Title says 700 g while the specification says 840 g
- Bait station is not included
- Some supplied reviews concern a Roshield box rather than these blocks
Best for: Someone who already has a Roshield-style station and will read the pack for the active.
Less suitable: A first purchase if you need the active before checkout.
Specifications
- Model
- Roshield 700 g blocks
- Brand
- Roshield
- Price
- ∼£14
- Customer rating
- 4.5/5(513)
- Bait station
- Not included
- Use
- Indoor and outdoor
- Feed claim
- Single feed
- Pack
- 700 g title
Common questions
What is the active ingredient?
The listing asks that question and the extract does not answer it. Do not treat a similar Roshield document as this ASIN.
Does it come with a bait station?
The title calls it a refill for bait-station packs. A station is not listed as included.
Which weight is on the page?
The title says 700 g. The spec line says 840 g. Both are in the extract.
Our view
Topline supplies 16 pre-measured paste sachets of 10 g, giving a coherent 160 g total at £15.95. The listing shows 4.5 out of 5, but that figure rests on only 32 reviews, the thinnest sample in this comparison by a wide margin. Its amazon.co.uk extract does not state an active ingredient or name a suitable bait station. Although the title says the sachets can be used indoors and outdoors around buildings, that does not remove the need to follow the pack label and prevent access by children, pets and wildlife. The pre-measured format may be convenient, but there is no evidence here that paste works faster or better than blocks or grain. Its price is only 45p below the all-weather blocks and more than twice the Rentokil grain price. With sparse reviews and missing safety-critical buying details, it is the easiest product in this set to skip.
Pros
- Sixteen pre-measured 10 g sachets
- Stated 160 g total matches the sachet count
- Listing specifies use in and around buildings
Cons
- Only 32 reviews support the headline rating
- Active ingredient is not stated
- No bait station or compatible model is mentioned
- £15.95 is the second-highest bait price in this set
Best for: Only if the pack in hand names the active and the station rule, which this extract does not.
Less suitable: A buyer comparing on review volume or a stated active.
Specifications
- Model
- Topline paste sachets
- Brand
- Topline
- Price
- ∼£16
- Customer rating
- 4.5/5(32)
- Bait station
- Not mentioned
- Use
- Around buildings
- Feed claim
- Fast-acting
- Pack
- 2 x 8 x 10 g
- Title line
- Out of reach
Common questions
Does the listing name a bait station?
No. The bullets say place the sachets where rodents go and keep them out of reach of children and pets.
What active is stated?
None. The extract does not name an active ingredient.
How many reviews support the 4.5 score?
32 on the listing line, and five review texts in the saved listing. That is a thin sample next to the other four baits.
Our view
Rentokil Rodine costs £7.10 for a 200 g grain-bait pack and is the only one of these five amazon.co.uk extracts to state its active ingredient: brodifacoum 0.0025% w/w. The listing has 4.3 out of 5 from 797 reviews, giving it a substantial, though smaller, evidence base than Ultra Power. Its sachets are meant to remain unopened so rats can gnaw through them inside a lockable, tamper-resistant station. No station is supplied or identified by model, so the low shelf price is not the full cost of getting ready to use the bait. The listing makes no damp-proof claim, which weakens it for a station exposed to moisture. One review disputes the sachet count, so check the contents when it arrives. It is the best-value choice here for a dry, sheltered station when you want the active stated before checkout.
Pros
- Lowest listed price in the comparison at £7.10
- Brodifacoum 0.0025% w/w is stated on the listing
- 4.3 out of 5 from 797 reviews
- Unopened-sachet instruction reduces handling of loose grain
Cons
- Bait station is not included and no compatible model is named
- One review disputes the sachet count
- No damp-proof claim for the grain pack
Best for: A buyer who wants a stated active and the lowest shelf price in this extract.
Less suitable: A wet station, where the all-weather blocks claim a damp-proof block.
Specifications
- Model
- Rentokil Rodine grain bait
- Brand
- Rentokil
- Price
- ∼£7
- Customer rating
- 4.3/5(797)
- Active on listing
- Brodifacoum 0.0025% w/w
- Bait station
- Not included
- Use
- Lockable station
- Feed claim
- One feed
- Pack
- 200 g
Common questions
What active is printed on this listing?
The bullet says brodifacoum 0.0025% w/w. That is the only active named in these five extracts.
Should the sachets be opened?
The bullet says do not open them. Rodents chew the sachet. One review described pouring the grain out.
Is a station in the box?
No. The bullet says the sachets fit a lockable, tamper-resistant bait station.
How we compared
For this comparison we kept five ready-to-use rat baits from twelve amazon.co.uk extracts. The scores are editorial, not a lab test. They use the listed price, the review line, whether an active and a station model are stated, and public UK limits on amateur rodenticides. Empty boxes, snap traps and ultrasonic plugs were left out. The pack label remains the instruction.
1
Amateur pack and field of use
25%The pack has to be labelled for the general public, and the allowed place is in and around buildings, not open land or a waste dump.
2
Tamper-resistant station
25%Amateur anticoagulant bait is sold for a lockable station. None of these five listings includes one, so a named station model matters.
3
Bait form for the site
20%Wax block, unopened grain sachet or paste sachet has to match a dry station or a damp one. Only one listing here claims a damp-proof block.
4
Active on the listing
15%The active is what the amazon.co.uk extract prints. Only one product in this set states it. Similar manufacturer sheets are not treated as this listing.
5
Price and review volume
15%Shelf price and the size of the review sample come after the checks above. A star rating on a few dozen texts is not the same evidence as a sample in the thousands.
Independent review
Last updated: 17.10.2026
8 sources checked
Rat poison buying guide
Five ready-to-use baits are on this page, shortlisted from twelve amazon.co.uk extracts. The scores are editorial. They use price, the review line, whether an active and a station model are stated, and the public UK limits on amateur rodenticide. No laboratory ran these products. The label on the pack you buy remains the instruction, including where the bait may be used and how long to wait. A station is a separate purchase in every case here.
What is rat poison?
Rat poison on this page is a ready-to-use rodenticide bait, not a trap, an empty box or a plug-in device. The five amazon.co.uk listings are wax blocks, grain sachets or paste sachets, for rats and, on these packs, mice. What you can check is a pack labelled for the general public, a field of use in and around buildings, a station you own, a form that matches a damp or dry place, and an active printed on the pack. A larger tub is more poison stored in the house.
Best for
- Householders with droppings along a wall who will buy a station and follow the label
- Shed or bin-store owners whose problem is around the building
Not ideal for
- A business, a livestock-feed store, or a loft you cannot reach
- Open land, a waste dump, or anyone reaching for a professional pack
Mistakes to avoid
- 1
Trusting a pet-safe title
“Pet Safe” on the all-weather title does not mean a dog or a child can reach the bait. The same listing still points you to station STV179 and includes gloves. Treat every pack as poison that stays in a locked station.
- 2
Buying bait and no station
None of these five includes a tamper-resistant station. The bait price is not the cost of being ready to use it. Empty boxes in the wider extract were £15.75 and £16.99, as a rule of thumb.
- 3
Judging the result after two nights
A single-feed line is not same-day death. STV says Ultra Power rodents may keep feeding for up to four days. A Roshield sheet gives average control as 5 to 10 days. If bait is still taken after the period on your label, call a BPCA member or the council.
What to weigh up
Station and field of use
HighThe station and the place come before the brand. None of the five baits includes a tamper-resistant box. HSE label criteria quoted by Think Wildlife say the station should resist dogs and children under six, be lockable or sealable, and be weather-resistant if used outdoors around buildings. Amateur bait is sold to go in that station. The field of use is in and around buildings, not open land and not a waste dump.
Form, active and reviews
HighForm is the next split. Wax blocks sit on a station rod: Ultra Power is 15 blocks of 20 g, the all-weather listing is a multi-pack of 10 g blocks, and Roshield is a larger refill whose title says 700 g while the specification says 840 g. Grain is Rentokil Rodine, 200 g, with a bullet that says to leave the sachets unopened. Paste is Topline, 2 x 8 sachets of 10 g, a coherent 160 g total. Damp is why an all-weather block exists, and only that Big Cheese listing makes a damp-proof claim.
Which option suits you?
Three typical situations, each with a recommendation from this comparison.
Buyer who wants the active stated
You already have a dry, lockable station and you want the active on the listing before checkout. Rentokil Rodine is the only extract here that states brodifacoum 0.0025% w/w, at the lowest bait price.
Damp shed or exposed station
The problem is around the building and the station gets wet. The all-weather blocks are the only listing in this set with a damp-proof claim, and they name station STV179 separately. The active is not on the extract.
Common questions about rat poisons
What is the best rat poison in 2026?
The top pick is Big Cheese Ultra Power blocks, 15 x 20 g at about £10.42. It has 4.5 out of 5 from 2,179 reviews, the largest sample here, and the listing names station STV566, which is not in the box. That is editorial listing evidence, not a lab test. The best value is Rentokil Rodine grain at about £7.10, the lowest price and the only extract that states an active, brodifacoum 0.0025% w/w. You still need a station.
How much does rat poison cost?
In this amazon.co.uk extract, bait runs from about £7.10 for Rentokil grain to about £16.40 for Big Cheese all-weather blocks. Ultra Power is about £10.42, Roshield about £13.59 and Topline paste about £15.95. Prices can move. None of the five includes a lockable station. Empty boxes in the wider pull were about £15.75 and £16.99, so bait plus station is the real outlay. Treat the box figures as a rule of thumb.
What should I check before I buy rat poison?
Check the user class first: the pack must be for the general public, not a professional user. The field of use is in and around buildings, not open land or a waste dump. You need a tamper-resistant station, and none of these five includes one. Then match the form to a damp or dry place, and only after that compare the stated active and the review count. In this set, only Rentokil prints an active on the listing.
Do I need a bait station with rat poison?
Yes. None of these five listings includes a bait station. Think Wildlife, quoting HSE label criteria, describes a station that resists dogs and children under six, can be locked or sealed, and is weather-resistant outdoors around buildings. Ultra Power names STV566 and the all-weather blocks name STV179. Rentokil says the unopened sachets fit a lockable station and names no model. Buying bait and leaving it loose is a common mistake.
Can I use rat poison in the garden?
An outdoor line on these listings means in and around buildings, such as a shed or a bin store, not a field. From 1 January 2025, second-generation anticoagulant rodenticides are not authorised in open areas or on waste dumps. GOV.UK says poison is for the named pest, and unnecessary harm can lead to a fine or prison. Lawn runs are a different problem: see our vole control comparison rather than baiting open grass.
How soon does rat bait work?
A one-feed claim is not same-day death. STV says rodents on Ultra Power may keep feeding for up to four days. A Roshield sheet gives average control as 5 to 10 days, and that sheet does not name the active for the Roshield product in this table. Waiting only two nights and calling the bait a failure is a mistake the sources flag. If take continues past the period on your pack label, stop and get advice.
When should I call a pest controller?
Call a BPCA member or the council for a loft or cavity, bait ignored or still taken after the label period, a food source you do not control, or a child or pet who can reach the bait. Council help may be charged. Substantial numbers in England, Wales and Scotland can mean written notice under the Prevention of Damage by Pests Act 1949. If someone has swallowed bait, call 999, or 111 if unsure, and take the pack.
Our verdict
Five amazon.co.uk baits, and no lab test. Big Cheese Ultra Power blocks are the top pick: 4.5 from 2,179 reviews, and the listing names station STV566, sold separately. Rentokil Rodine grain is the best value at about £7.10, and the only extract that states brodifacoum 0.0025% w/w. The all-weather blocks are the damp-site alternative at a higher price. Roshield and Topline leave the active unstated. The pack label remains the instruction.
Best value
View offer
Rentokil Rodine grain bait
Lowest price at £7.10, and the only extract that states brodifacoum 0.0025% w/w.
Editorial
DIY & tools editor
Pest controlDIY toolsamazon.co.uk listings
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.
Updated: 17.10.2026
8 sources checked
Guides to rat poisons
Guides on what to look for, how to use a product, and common mistakes.
Rat poison buying guideChecks before you buy, without a winner.Best rat poisonTop pick and best value from review volume, price and a stated active.How to use rat poisonPublic rules around any pack, and when to stop. The label is the instruction.Rat poison bait stationsWhy the box is required and sold separately.Blocks vs grainBlock, grain or paste, with no kill-rate claim.
Related comparisons
Sources
Public UK sources used for this comparison; last checked on 16.10.2026.
- HSE: Using biocides (retrieved 16.10.2026)
- HSE: Rodenticides (retrieved 16.10.2026)
- HSE: SGAR bulletin on open areas (retrieved 16.10.2026)
- Think Wildlife: bait station label criteria (retrieved 16.10.2026)
- CRRU: training and professional supply (retrieved 16.10.2026)
- GOV.UK: Pest control on your property (retrieved 16.10.2026)
- NHS: Poisoning (retrieved 16.10.2026)
- BPCA: Rat control (retrieved 16.10.2026)
This article contains affiliate links. If you buy through these links, we may earn a small commission at no extra cost to you. Listings are on amazon.co.uk. Our notes are independent of that commission and follow the extracts and public sources named below. They are not a laboratory test.