Top 3 Working Products for Effective Lethal Rat Control in the UK

Edited by
Inga Cryton
Reading Time: 43 minutes.
Updated: .

This comparison list shows bait types and the main ingredients of rat poison. For additional information, just look at the links provided next to each product’s title.

Our Recommended 3 Best Rat Poison Products in the UK 2023 Comparison Chart

Editor's Choice
The Big Cheese All-Weather review
The Big Cheese All-Weather
  • Type: Bait Blocks
  • Active Ingredient: 0.0025% Difenacoum
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People's Choice
Ratkil Rat & Mouse Killer Poison review
Ratkil Rat & Mouse Killer Poison
  • Type: Bait Sachets
  • Active Ingredient: 0.0025% Brodifacoum
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Pest-Stop Super Rat & Mouse Killer review
Pest-Stop Super Rat & Mouse Killer
  • Type: Pasta Baits
  • Active Ingredient: 0.005% Difenacoum
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Rats are very canny rodents. When they see that one rat died from the bait, they won’t eat it. These rodents multiply quickly, so if you don’t deal with your rat problem promptly you will have a huge rat problem in your house.

It is important to remove rats as soon as possible. Poison baits and rodent traps are effective ways to remove pesky rats.

In this article, I’ll take a look at the 3 best rat poison products for homeowners in the United Kingdom. There are many rodenticides on the UK market today, and it can be difficult to know which one is right for you. This blog post will help you find that perfect product by going over each of them in detail and then giving my opinion on which one was the most effective. Let’s get started!

Top 3 Rat Poison Products in the UK Reviewed

Are you looking for the best way to kill rats? After much research, some products stand out more than others. And the winner is The Big Cheese All-Weather Block Bait.


1. The Big Cheese All-Weather – Best Rat Poison Bait Blocks (Editor’s Choice)

See More ImagesThe Big Cheese All-Weather Block Bait
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The Big Cheese All-Weather Block Bait is perfect for homeowners. It’s made of moisture-resistant and highly palatable blocks that are adhesive to use in all types of weather conditions. Unlike other bait stations that must be purchased separately, this pack comes with 15 blocks designed specifically to fit into any bait station.

I really like that it can be used indoors or outdoors because it makes the rat poison easy to access without being required to go outside. So, if you’re looking for a fast-acting, effective rat poison that will stay fresh in any weather condition and can be used indoors or outdoors, this is the product for you!

Please be careful when using rat poison products as they can be dangerous if not used correctly. Rat poison must always be secured in a bait station to prevent access by non-target species.
  • Kill rats within 24 hours.
  • Indoor and outdoor use, designed to fit in any bait station.
  • Stress-free rodent control.
  • The bait station must be purchased separately.
  • Rat poison products should always be placed inside bait stations to avoid non-target deaths.

2. Ratkil Rat & Mouse Killer Poison – Best Rat Poison for Garden and Home (People’s Choice)

See More ImagesRatkil Poison Sachets
Read Verified Customer Reviews

We all know how awful it can be when we have to deal with pests. It’s not just the inconvenience, but there are also health concerns. Rats and mice carry several diseases that can make you sick, which is why it’s important to get rid of them as soon as possible.

Ratkil Rat & Mouse Killer Poison is a product designed for this very purpose – it will kill rats and mice quickly and effectively without posing any danger to humans or pets.  It’s safe around your home too! This poison comes in packets containing enough for 40 kills per packet – perfect for those really stubborn infestations that refuse to go away on their own! And since each rat or mouse only has to eat one packet before they die, it won’t be long before your home is rat and mouse free.

If you’re looking for an easy-to-use, highly effective rat poison to help get rid of the pests in your home, Ratkil Rat & Mouse Killer Poison is a perfect choice! Order now to get started on ridding yourself of these unwanted guests!

  • It’s quick and easy to use.
  • The rat or mouse will die within a few hours.
  • You’ll be able to sleep soundly again, knowing the pests are gone for good!
  • The active ingredient is Brodifacoum, which is a lethal dose in just a single feed.
  • Ratkil is easy to use, both indoors and outdoors.
  • A single pack will kill up to 40 rats or mice.
  • It’s safe for humans and pets and is home-friendly when used in bait boxes.
  • If you use too much of it, it can kill other animals in the home as well as rodents.

3. Pest-Stop Super Rat & Mouse Killer Pasta Baits – Best Rat Killer Products

See More ImagesPest-Stop Rat Killer Bait Pasta
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Pest-Stop Pasta Baits are perfect for controlling mice and rats where they live – in your home!

These baits are easy to use, just place them into a bait station or set out the pre-measured sachets. For best results, use with Pest-Stop Professional Rodenticide Bait Stations.

And don’t worry about offending your nose – these baits have an attractive peanut scent that will lure rodents to their doom.

  • Easy to use – just place them into a bait station or set out the pre-measured sachets.
  • Non-toxic, attractive smell that will lure pests to the bait station.
  • No mess, no need to touch dead rodents or smell decaying carcasses.
  • Rodenticides should always be used within lockable bait stations.

What’s the Best Rat Poison on the United Kingdom Market in 2023? – Expert Guide

Have a rat problem? Think you have to suffer? Not anymore: Read on how to kill rats, what kills rats, and what products are the best ones for rat extermination. Choose the best poison that will effectively control canny creatures. However, trying to kill rats homeowners often make mistakes. We suggest different methods of killing disease-carrying pests. Learn more in this article.

What Kills Rats?

When it comes to lethal rat control, traps and poisoning are the most common methods. However, neither will provide long-term control if areas, where pesky rats are entering structures, are not repaired.

Rats scent mark with urine to communicate with each other.

With a wide variety of options to choose from, you are always sure to find what you need to control pesky rats. With both rat control kill traps and poison baits you can easily handle rat infestation.

Poison for Troublesome Rats

Although the poison is the most efficient and fast method for eliminating rats in large numbers, before purchasing poison, you are to know that the same deadly-to-rats ingredients are lethal to humans and your pets.

Use poison for pesky rats? Be attentive.
Remember, these rodents won’t die instantaneously after eating it. They may wander into your walls or attic before dying.
As a result, this may cause a disgustingly foul odour and attract flies.

These days, many poisons are known to be highly attractive to troublesome rats and can exterminate a large rat population in a matter of days.

Blue rat poison on handCommercial rat poisons are necessary if natural rat repellents, deterrents and traps are unsuccessful.

There are 2 types of rodenticides:

  1. First generation rodenticide – poison that kills slowly. Baits that come to the first generation group have a cumulative effect: rats don’t die immediately; they must repeatedly consume poisonous bait.
  2. Second generation rodenticides – a single consumption is enough.

Benefits of using rat poison: Although the trapping method is very effective, using poison is generally cheaper. Poison for rats is produced in blocks, bars, chunks, and pellets. You don’t need to check poison bait every day. Moreover, it is more beneficial to use rodent poison than other rat control options in big constructions and locations such as hangers and sheds.

Where to place poison: in rat traffic areas – around sinks, under the cabinets, under porches, or in rat holes.

Bait station, bait blocks and pellet place packs

Types of Poison

Poison is very efficient in eliminating destructive critters. However, you are to know that chemicals that are used to exterminate these rodents are also poisonous to other animals. Therefore, you need to use poison carefully and according to its directions. Some rat poisons are lethal after 1 exposure while other options require more than one.

Nowadays, there are a huge number of active ingredients registered as rat rodenticides. We can group these pesticides according to how they work.

Here are the following types of rat poison:

  1. Bromethalin
    Bromethalin poisonWhen compared to other varieties of rat poison, this neurotoxin is relatively safer for use around pets. Bromethalin works by killing rats a couple of hours following a single poison ingestion.
  2. Anticoagulants
    Anticoagulants contain dangerous chemicals that are known to interfere with blood clotting. (Death occurs 1 to 2 weeks after lethal dose ingestion). Bromadiolone, Difethialone, Chlorophacinone, Diphacinone, Difenacoum, and Brodifacoum are all anticoagulants.
    The most popular anticoagulants are Difenacoum and Brodifacoum. Although these poisons are frequently used for rat control, they are not recommended for use around kids or pets.
    What to buy: The Big Cheese All-Weather Block Bait.
  3. Calciferols
    Poisoned ratCalficerols (Vitamin D, D3 and D2) are another type of rodenticides. They are toxic to rodents and work by affecting Vitamin D and calcium levels in the body. In rats that consume the poisonous bait it, as a rule, causes hypercalcemia – a well-known condition where the level of calcium is raised to such a big degree that the stomach, blood vessels, kidneys, heart, and lungs are damaged by calcification.
    If the poisoning is severe enough – raising the calcium level – it leads to death. These rodenticides act slightly slower than bromethalin. It usually takes a day after consumption to reach its effectiveness.
    Calciferol and anticoagulants are often mixed in bait to increase the chances of death and decrease the time involved.
  4. Combinations
    In some countries 3-component rodenticides – vitamin D, anticoagulant and antibiotic – are effectively used to kill pesky rats.

How Does Rat Poison Work?

It works as an anticoagulant causing haemorrhage by preventing rat blood from clotting. Anticoagulants work by depleting Vitamin K stores – which is a very essential component in blood clotting – in a rat’s system. Along with this rodenticides contain big doses of other anticoagulants such as indandione and 4-hydroxycoumarin anticoagulants which cause a huge trauma to the rat’s blood vessel walls.

Rats – dead or alive – can carry dangerous-to-humans infections. If killed by poison, carcasses may carry residues of rodenticides that can present risks to wildlife or predators.
Therefore, bait stations, carcasses, and uneaten bait should be disposed of.

When rats begin to bleed, there is no vitamin K to clot the blood. As a result, rats die within two days from internal haemorrhaging.

Rat poison box is the safest way to protect against rat poison. You can set poison inside the box that will lure the critters inside and once consumed the rat will die.

I suggest buying:

See More ImagesThe Big Cheese Rat & Mouse Bait Station
The Big Cheese Rat & Mouse Bait Station
  • The bait station has a lockable lid secured with a key to protect against accidental contact by children or pets.
  • Can safely be used both indoors and outdoors.
  • A bait station is required by UK law when baiting mice and rats.

What is the Most Efficient Rat Poison?

It’s difficult to say what poison is the most effective. It must be stressed that rats will not travel far from their activity areas to locate poison baits. The key to success in rat control with poison is placing the baits where these creatures will repeatedly encounter the bait.

Such places include:

  • at or near the rat’s regular feeding sites;
  • in or close to rodent burrows;
  • in pathways between the rat’s nests.

I suggest to use the following: The Big Cheese All-Weather Block Bait.

Questions & Answers

Where to buy poison for rats?

The best place to buy pest control products is usually at places that specialize in providing outdoor supplies. These are the type of stores that typically have a large section for insecticides, poisons, and other household items. If they don't have what you're looking for, they have people who can help you find it.

What rat poison do professionals use?

Professionals use second-generation anticoagulants, such as Ratkil Rat Poison, to kill rats.

Rodent control professionals like the pest management industry and animal control officers need to know different rat poisons than homeowners do because they often need to consider how these poisons will affect humans and other animals in addition to rats.

What's the strongest rat poison I can buy?

I can't condone stronger rodent poisons because they cause more suffering than necessary. Our advice is to try The Big Cheese All-Weather Blocks, which are second-generation anticoagulants that work at very low concentrations and provide a long-lasting effect. It's one of the strongest pest control treatments for rats on the market!

It's important to choose a method that you find humane rather than choosing the strongest option.


If you are looking for a simple and efficient answer to a rat problem, look no further than this smart solution: The Big Cheese All-Weather Block Bait.

If you see that the rat problem is minor – like a few rats living in ground burrows – then the direct placement of best rat baits into the burrows can solve the problem.

However, when the infestation is more serious, a combination of direct placement of poison baits together with the use of bait containers will be the best approach to achieve effective, economical, and quick control.

You can find further details of Rats Control here.

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I have been working on pest extermination information for a long time and am excited to share this information with you. I also provide product recommendations for my favorite pest extermination products.


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