Get In Touch

Fill in your details below and click 'Submit'

Customer Login


Total: £0.00

View Cart

Free Next Day Delivery

For orders over £50 placed before 4.00pm

Pest Expert Formula B Rat Killer Poison 3kg (30 x 100g)

£26.95 incl. VAT
£22.46 excl. VAT

Select Quantity


Pest Expert Formula 'B' Rat Killer is a highly effective professional-grade rat poison delivering rapid results. 

Containing the strongest concentration of Brodifacoum – This should NOT be confused with the weaker, less potent rodenticide, Bromadiolone.

Despite what many companies claim, Pest Expert Formula B+ provides the strongest range of rat and mouse poisons available in the UK and is designed to kill in a single feed.

Proven to be up to 4 x stronger than other poisons containing Bromadiolone or Difenacoum, the result with Pest Expert Rodenticides is always faster, more effective control and therefore better value for money! 

  • Contains maximum strength Brodifacoum
  • Made from top quality whole-wheat grain
  • No wax content so highly palatable to rats
  • Suitable for indoor and outdoor use around buildings
Product Information
Formula 'B' Rat Killer contains maximum strength Brodifacoum (0.0029%), and is the strongest and most effective poison for sale to the amateur market, being 4 times more powerful than Bromadiolone when used against rats.

Formula 'B' is made from the highest quality whole-wheat grain and is wax-free, making it highly palatable to rats, ensuring an excellent bait uptake and outstanding results.

Perfect for use in domestic situations, Formula 'B' can be used both indoors and outdoors around buildings to eradicate rat infestations in garden sheds, lofts and kitchens. Formula 'B' rat bait is also ideal for rodent control in commercial premises such as restaurants, food premises, factories and farms.

Directions for use
When using any type of rodenticide, care should always be taken to ensure that it is not accessible to children or non-target species such as pets or other forms of wildlife. Our heavy-duty lockable rat bait boxes should be used to securely house the rat poison.

Open each bait station and fill the central chamber with a bait sachet. Close/lock the box and position at the edge of a wall/fence, along a rat run, or wherever else rat activity has been noticed - at intervals of 5-10m. Check each rat bait station every 5-7 days and replenish rat poison as necessary until no more rat bait is taken. 

For the best value for money, please see our Rat Killer Kits, which contain both Formula 'B' and bait stations and are supplied with a professional advice sheet to help you achieve and maintain successful rodent control.

Contains Brodifacoum at 0.0029% w/w 
Authorisation No: UK-2017-1051-0002
Use Biocides safely. Always read the label and product information before use. 

Now supplied in easy-to-use 100g measured sachets, enabling precise baiting for improved control. 

Most popular products

Customer Reviews

Write an online review and share your thoughts with other shoppers!

Reviewer: Sarah Wallace from Cardiff   5 Stars

I'm back for more bait because it is outstanding

I purchased a bulk box during lockdown. Fir years we have had rodent invasion when students are away. Lockdown was horrific. A bag works with 48 hours. I pop a whole bag down don't even open it. Ratses/Meeces drag it away to nuke the babies. Particularly bad nest during Easter holidays and rental renovations in area PLUS the reduced refuse collections.

Reviewer: Ron Wilkinson from Somerset   5 Stars

It Works

After lockdown and the closure of local food takeaway outlets we had rats and rats and rats. I trapped and tried various baits all worked a bit, but we still had rats. So I bought some Pest Expert B+ grain sachets and after 3 applications have seen no sign of rats or field mice for over four weeks now.

Reviewer: Waheeda Hussain from Bradford   5 Stars

Rat 3kg use in loft

The rat poison arrived the next day paid extra for weekend delivery, put the poison down now in waiting for the rats to eat it and hoping that this will end our problem, tired the traps but non have been caught, i think we have a clever team of them. Will let you know hopefully soon of the outcome .

Reviewer: Jeff Clarke from Ireby   5 Stars

I don't usually take any notice of reviews let alone write them, but this needs reporting!

I have disposed of nearly 100 rats in three years using trapping methods but with this stuff poured down the rat holes really works and does not cause any harm to the many wild birds that feed in my small garden. The last five rats of various sizes disappeared in 4 days.

Many thanks Pest Expert!

Reviewer: Ken from Oxford   5 Stars

I have tried all different products and to no avail

Used your project problem solved Thank you

Reviewer: Beryl Breen-Killen from Boston   5 Stars

value for money

this company is value for money and great service ordered afternoon and arrived next day wow!!!!!!!!!! have ordered before and will use this company again

Reviewer: Anthony Mason from Kendal   5 Stars

Excellent service

Very quick service and items were securely packaged. The only drawback is that the rats do not want to eat it!

Reviewer: Patrick Morgan from Peterborough   5 Stars

Excellent Service

Product arrived very quickly.

Reviewer: M Wright from Sutton Coldfield   5 Stars

Fast delivery and product does a good job.

The product was delivered very promptly, and had done a good job.

Reviewer: Adrian Pert from Chichester   5 Stars


Delivery in 21hrs with email notifications for order receipt, processing and despatch. Excellent service

Reviewer: Adrian Pert from Chichester   5 Stars


Delivery in 21hrs with email notifications for order receipt, processing and despatch. Excellent service

Reviewer: Mr Butler from Rotherham   5 Stars

Excellent Service !!

Couldn't fault the service, prices and convenience !

Reviewer: John H from Bishops Stratford   5 Stars

Just what we needed.

Great service and a great product. We were kept informed of the progress of our order and received the package on time. We will use them again if needed.

Reviewer: Sarah from GERRARDS CROSS   5 Stars

Speedy delivery, good prices

The title says it all!

Reviewer: Alan Holmes from Birmingham   5 Stars

The product supplied worked well and rid me of the pesky vermin.

Would definetly recommend your product to others.

Reviewer: Merle Threadgill from Peterborough   5 Stars

quick delivery and rat loves the food..............

Very pleased with the product good to get larger size a bit cheaper. Seems to work have had no trouble since using it

Reviewer: Michael Davies Printing from Grantham   5 Stars

Great price and fast delivery

I found them after trawling the net and they came out fantastic on the price front with a really good website and many items of interest to browse. I then ordered and very quickly received my order. Will without doubt use them again.

Reviewer: Stephen West-Oram from Ledbury   5 Stars

Quck service with a product that WORKS!

The mouse poison was chosen because of the unbeatable price offered. It arrived the day after I ordered it and it seems to work. No mice I the loft since I laid it down. Don't know if it is any better than competing brands (it contains the same active ingredient) but it definitely works and cost me a lot less than a nationally known brand.

Reviewer: Mccabe from Shoreham By Sea   5 Stars

Great service

Fast service, no problems

Reviewer: Joe Kelly from Northampton   5 Stars

First class,

good product; Good service.

Reviewer: Mohammed Shaban from Rochdale   5 Stars

excellent services excellent products

Reviewer: Asrar Khan from High Wycombe   5 Stars

Excellent and fast service

I will use your product again if I need to

Reviewer: Martin from Cheltenham   5 Stars

Any excellent service. Rats are now on the run rather than on the march.

I strongly recommend Pest Expert. Their products, which I have used over a period of time, are effective and their customer service is exceptional.

Reviewer: Mrs Carole Lade from Dorking   5 Stars

Rats loved this

Excellent service was with me within 24hrs of ordering

Reviewer: Nigel from Wokingham   5 Stars

very good product

ordered on a sunday arrived at my door 3.30 on the tuesday afternoon four times the size and half the price of similar products well he same colour anyway the beasts are taking it yum yum fill their tum

Reviewer: Ernest from Lincoln   5 Stars

Great products and good service

Recommend this company to anyone. Good prices and quick delivery !!

Reviewer: Ian A from Dalry   5 Stars


The rats don't like you as you delivered to quick,They are all gone now.

Reviewer: Mr Malcolm Smith from Abingdon   5 Stars

Fast and efficient response

Very professional, delivery very quick.

Reviewer: Tony Van Emst from Carshalton   5 Stars

It certainly works!

I found the website very easy to use with a good description of the product range I was interested in (dealing with a rat problem). Delivery was faultless and within the allocated 1-hour window I was advised of. Put the rat bait out and found it was very attractive to the pesky rodents! Found a dead one shortly afterwards in the garden. Job done, me thinks!

Reviewer: Mr Budd from Westerham   5 Stars


Terrific service all round.

Reviewer: Wendy Oldham from Cambridge   5 Stars

The rat poison appears to have worked

The item arrived on time and was very easy to use and apparently has been very effective. Thanks

Reviewer: Mrs Mary Miller from Cambridge   5 Stars

Good service

Ordered online but had to telephone as we didn't get a reply. Very helpful chap we spoke to who was able to clarified our order was received and had been placed out for delivery.

Reviewer: Peter Barber from Flamborough   5 Stars


Fast delivery and an effective product. Will use in the future.

Reviewer: John Clark from Brighton   5 Stars

Great service

Had a problem with rats speedy delivery 24 hrs great service problem solved

Reviewer: John from Easingwold   5 Stars

First time dealings with company, excellent service.

Never dealt with company before and therefore unsure. They provided excellent service and we could not fault them.

Reviewer: Elizabeth Anderson from Newcastle   5 Stars

good service.

Very prompt delivery. I was sure i had a rat under the house so i purchased the full monti. Food pellets 2 traps and a feed station next day had a large mouse in one of the traps. Nothing sinse thats been over a week now.

Reviewer: Vivienne Noake from Woodbridge   5 Stars

service and prices

Excellent service and competitive prices.

Reviewer: Janet from Sheffield   5 Stars

Rat Poison

Quick working product. Fast Delivery

Reviewer: Roland Rat from Romford   5 Stars

I purchased rat poison

If you do have the misfortune to have rodents in your yard, Pest Expert offer a quality product at a competetive price delivered next day so that your wife can sleep free from fear of being eaten by rats or paying the rats at the local council £105 to attend.

Reviewer: Stephen Goodhall from Gloucester   5 Stars

Very good

Was very pleased with the quick delivery by pest expert, and the product was very effective .

Reviewer: Malcolm from Durham   5 Stars

Simply the best...

The delivery timed to almost the given minute made this the best online purchase to date.

Reviewer: Karen Hudson from Blackpool   5 Stars

Perfect product & Service

Used to use Slaymor for mice control but they have ceased trading, so looked for alternative and this looks exactly the same so I was very pleased.

Reviewer: R Smith from sandy   5 Stars

Fast delivery Highly Recommend this company and products.

Reviewer: Laurence Broomhead from West Chilington   5 Stars

Fantastic service

Great stuff to get rid of rodents.

Reviewer: Daniel Lynch from Hayes   5 Stars

Be ordering and delivery process was very efficient and the product is very effective.

It was my very first time having to make such an order in addressing the rodent problem. The user kit made the application easy for an amateur.