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10 Best Rat Blocker For Drains in The UK

Last updated on 08/07/2025

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Metex - Ratwall For 110mm/4" Pipe. Made From Robust, Corrosion Resistant Stainless Steel With A One Way Valve & Flap. This Rat Blocker For Drains Is Easy To Install By Hand Or At Street Level

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Why We Love It

Stops rats through drainage system.
Prevents rats' upward movement.
Simple, secure installation process.

Main Highlights

STOP RATS TRAVELLING THROUGH DRAINS: One of the primary ingress points for rats into a domestic or commercial property is via the drainage system, either directly from the main sewers or a collapse within the pipe. A Rat blocker is installed within the inspection chamber to stop rats movement upstream. By installing a Rat Blocker all upstream branches are protected.
ONE-WAY FLAP PREVENTION: The Metex Ratwall allows liquids and solid waste to pass down the system whilst preventing access to rats moving upstream. The rats cannot pass or chew through the barrier flap, thus preventing their access to re-infest.
EASY TO INSTALL PROTECTION: This Rat Blocker compresses and expands for easy, frictionless installation and a secure fit. Can be installed by hand or from street level with a separately available installation pole. Suitable for domestic use in plastic, clay and cast iron drains. Features an external hinge that enables maximum waste flow.
RATWALL RAT BLOCKER: This listing is for a 4" / 110mm version. The rat wall can be installed into 100mm Victorian drains. Instructions are included, and we also offer a support video to help with installation. We also have installation instructions for with or without an installation pole. A 6" / 150mm variant is also available.
METEX: We specialise in non-toxic rodent control equipment including our Nordisk and Ratwall rat valves as well as RatTape proofing tape. We are a UK business that designs and manufactures innovative products for construction professionals and the DIY market, working with manufacturers both in the UK and overseas.

RatGate Rodent Prevention System

RatGate: 4" (110mm) stainless steel rat flap/barrier/blocker for clay, plastic and cast iron drainage pipes! Keep rats out of your property!

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Why We Love It

Easy and quick installation.
Keeps rats out effectively.
Environmentally friendly and humane.

Main Highlights

The only product on the market that allows you to lift the flap from the top of the manhole - a crucial feature for drain maintenance
KEEP RATS OUT OF YOUR PROPERTY
EASY TO INSTALL - Only basic tools are required to install a RatGate.
ACCESSIBLE - The RatGate includes a liftable flap mechanism, providing easy access for drain maintenance.
TOUGH CONSTRUCTION - Made from high grade laser cut stainless steel.
MAINTENANCE FREE - Once the device is installed there is no maintenance required other than a periodic check.
ENVIRONMENTALLY FRIENDLY - The device is humane, poison free and environmentally friendly.

Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1)

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Why We Love It

Double non-return valves feature.
Permanent rat entry solution.
Rust and gnaw resistant.

Main Highlights

DOUBLE NON-RETURN Valves: Allowing Free Flow Drainage but Prevents Rat Entry. Please note: other cheaper alternatives only have 1 single valve which offers less protection
PERMANENT RAT ENTRY SOLUTION: Our rat blocker is an immediate and permanent solution to stop the entry of rat/rodents
RUST & GNAW RESISTANT: Created From Stainless Steel, Rust & Gnaw Resistant
12 MONTHS MANUFACTURE'S WARRANTY: Guaranteed Product Quality for Long Lasting Protection for Your Home and Drainage System
SUITABLE FOR CLAY & PLASTIC DRAINS: Our rat blockers can fit in both clay and plastic-type pipes in 6″ size. Flexible Fitting for Drain Sizes (145/150mm)

Rat Blockers Stainless Steel for Drains - Permanent Rat Prevention for Drains, Twin Steel Valves, 4 inch Rat Flap(95mm/105mm), Non-Return Valve, Shorter Design for Curved Fittings

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Why We Love It

Immediate, permanent rat solution.
Fits clay and plastic pipes.
Rust and gnaw resistant.

Main Highlights

PERMANENT RAT ENTRY SOLUTION: Our rat blocker is an immediate and permanent solution to stop the entry of rat/rodents
SUITABLE FOR CLAY & PLASTIC DRAINS: Our rat blockers can fit in both clay and plastic-type pipes in 4″ size.
TWIN NON-RETURN VALVES: Twin Valves, Allowing Free Flow but Also Blocks Rat Entry
RUST & GNAW RESISTANT: Created From High Performance Stainless Steel, Rust & Gnaw Resistant
15 MONTHS MANUFACTURE'S WARRANTY: Guaranteed Product Quality for Long Lasting Protection for Your Home and Drainage System

Metex - Nordisk 100mm Rat Blocker. Made From Marine Grade Acid Resistant Stainless Steel With A One Way Valve & Two Serrated Flaps For Double Protection. Easy To Install Industrial Rat Valve.

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Why We Love It

Stops rats from entering drains.
Double protection with serrated flaps.
Approved by leading agencies.

Main Highlights

STOP RATS TRAVELLING THROUGH DRAINS: One of the primary ingress points for rats into a domestic or commercial property is via the drainage system, either directly from the main sewers or a collapse within the pipe. A Rat blocker is installed within the inspection chamber to stop rats movement upstream. By installing a Rat Blocker all upstream branches are protected.
DOUBLE PROTECTION: The Metex Ratwall has two sharp serrated flaps for double protection from rat infestations. This also allows liquids and solid waste to pass down the system whilst preventing access to rats moving upstream. The rats cannot pass or chew through the barrier flap, thus preventing their access to re-infest. All models of the Nordisk Rat Blocker are supplied with reversible flaps so that the same unit can be used in either inlet or outlet pipes.
WRC & VA APPROVED: The only UK rat blocker to achieve Water Research Centre Approval, the benchmark in UK water industry. The Nordisk rat blocker has also passed the stringent VA Approval issued by the Danish certification body, ETA-Denmark, and inspected by the Danish Technological Institute.
PROVEN PROFESSIONAL RAT BLOCKER: Over 250K units installed worldwide, this rat flap is proven in professional pest control use over 10 years and used in 1 in 6 Danish homes. All parts of the rat valve are made of marine grade 316 acid-resistant stainless steel for demanding environments. Unique patented design with expanding sides allows the rat valve to slide into the drain without friction. Easy to adjust for drain inlet or outlet positions
METEX: We specialise in non-toxic rodent control equipment including our Nordisk and Ratwall rat valves as well as RatTape proofing tape. We are a UK business that designs and manufactures innovative products for construction professionals and the DIY market, working with manufacturers both in the UK and overseas.

Metex - Ratwall for 150mm/6" Pipe. Made from Robust, Corrosion Resistant Stainless Steel with A One Way Valve & Flap. This Rat Blocker for Drains is Easy to Install by Hand Or at Street Level

Free Shipping

Why We Love It

Prevents rats in drains.
Easy installation by hand.
Non-toxic rodent control.

Main Highlights

STOP RATS TRAVELLING THROUGH DRAINS: One of the primary ingress points for rats into a domestic or commercial property is via the drainage system, either directly from the main sewers or a collapse within the pipe. A Rat blocker is installed within the inspection chamber to stop rats movement upstream. By installing a Rat Blocker all up stream branches are protected.
ONE-WAY FLAP PREVENTION: The Metex Ratwall allows liquids and solid waste to pass down the system whilst preventing access to rats moving upstream. The rats cannot pass or chew through the barrier flap, thus preventing their access to re-infest.
EASY TO INSTALL PROTECTION: This Rat Blocker compresses and expands for easy, frictionless installation and a secure fit. Can be installed by hand or from street level with a separately available installation pole. Suitable for domestic use in plastic, clay and cast iron drains. Features an external hinge that enables maximum waste flow.
RATWALL RAT BLOCKER: This listing is for a 6" / 150mm version. The rat wall can be installed into 100mm Victorian drains. Instructions are included, and we also offer a support video to help with installation. We also have installation instructions for with or without an installation pole. A 4" / 110mm variant is also available.
METEX: We specialise in non-toxic rodent control equipment including our Nordisk and Ratwall rat valves as well as RatTape proofing tape. We are a UK business that designs and manufactures innovative products for construction professionals and the DIY market, working with manufacturers both in the UK and overseas.

Buffalo Pest Control Water and Rodent Non Return Valve 110mm / 4 inch

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Why We Love It

Stainless steel construction, durable.
Effortless installation, no tools.
Humane rat prevention, WRc approved.

Main Highlights

DRAIN AND SEWER NON RETURN VALVE - to stop rats and rodents from climbing up drain pipes, sewers, toilets and into your home.
ANTI RODENT FLAP VALVE with stainless steel flap and face prevents rodents from entering the property. The flap allows rats to leave the property but prevents them from coming back up the sewer or drain pipe. When fully inserted, the a complete stainless steel face prevents the rats from entering your property and protecting your house plumbing.
BUFFALO'S UNIQUE DESIGN ensures it will fit clay and plastic 110MM / 4" pipes and opens and clears chamber walls on bent inlet chamber pipes
EASY TO INSTALL - Simple push fit design, just push into the end of a drain pipe or inlet into an inspection chamber. The rubber fins secure the valve in position, no need for any tools.
Humane way to stop rats in drains and homes, as the Buffalo Rat Blocker allows the rat to leave the property but stops them from coming back. WRc APPROVED.

Rat Blockers for Drains | Permanent Rat Prevention Valve & Rust Resistant Stainless Steel, Flexible Fitting 95mm - 105mm (Pack of 1)

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Why We Love It

Double non-return valves protection.
Immediate and permanent solution.
Rust and gnaw resistant.

Main Highlights

DOUBLE NON-RETURN Valves: Allowing Free Flow Drainage but Prevents Rat Entry. Please note: other cheaper alternatives only have 1 single valve which offers less protection
PERMANENT RAT ENTRY SOLUTION: Our rat blocker is an immediate and permanent solution to stop the entry of rat/rodents
RUST & GNAW RESISTANT: Created From Stainless Steel, Rust & Gnaw Resistant
12 MONTHS MANUFACTURE'S WARRANTY: Guaranteed Product Quality for Long Lasting Protection for Your Home and Drainage System
SUITABLE FOR CLAY & PLASTIC DRAINS: Our rat blockers can fit in both clay and plastic-type pipes in 4″ size. Flexible Fitting for Drain Sizes 100mm - 110mm

Roshield Rat Drain Guard | Stop Rats within Drainage & Properties | Rodent Flap Control & Prevention Proofing (Stainless Steel 6"/150mm)

14% OffFree Shipping

Why We Love It

Stops rats from entering drains.
One-way flap prevents reinfestation.
Easy installation and maintenance.

Main Highlights

STOP RATS FROM DRAINS - One of the primary ingress points for rats into a domestic or commercial property is via the drainage system, either directly from the main sewers or a collapse within the pipe. A drain guard is installed within the inspection chamber to stop rats.
ONE-WAY FLAP PREVENTION - The Roshield drain guards allows liquids and solid waste to pass down the system whilst preventing access to rats moving upstream. The rats cannot pass or chew through the barrier flap, thus preventing their access to re-infest.
EASY TO INSTALL PROTECTION - Drain guards require no previous experience with installation and, once installed, needs no long-term maintenance. Drain guards can be installed either at the entrance or exit of the pipe, and the included bolt can be switched to match the flow direction.
MADE IN THE UK - Are drain guards are manufactured in the UK from 316 stainless steel (marine-grade) and are suitable for the challenging and damp environment found within a drainage system. Our drain guards are used within the professional pest control industry.
DRAIN GUARD KIT SIZE - This listing is for a 6" / 150mm version. Instructions are included, and we also offer a support video and backup technical help on request. A 4" / 110mm variant is also available.

Roshield Rat Drain Guard | Stop Rats within Drainage & Properties | Rodent Flap Control & Prevention Proofing (Stainless Steel 4"/110mm)

Free Shipping

Why We Love It

Prevents rat infestations effectively.
Simple and quick installation.
High-quality, durable materials.

Main Highlights

STOP RATS FROM DRAINS - One of the primary ingress points for rats into a domestic or commercial property is via the drainage system, either directly from the main sewers or a collapse within the pipe. A drain guard is installed within the inspection chamber to stop rats.
ONE-WAY FLAP PREVENTION - The Roshield drain guards allows liquids and solid waste to pass down the system whilst preventing access to rats moving upstream. The rats cannot pass or chew through the barrier flap, thus preventing their access to re-infest.
EASY TO INSTALL PROTECTION - Drain guards require no previous experience with installation and, once installed, needs no long-term maintenance. Drain guards can be installed either at the entrance or exit of the pipe, and the included bolt can be switched to match the flow direction.
MADE IN THE UK - Are drain guards are manufactured in the UK from 316 stainless steel (marine-grade) and are suitable for the challenging and damp environment found within a drainage system. Our drain guards are used within the professional pest control industry.
DRAIN GUARD KIT SIZE - This listing is for a 4" / 110mm version. The drain guard can be installed into 100mm Victorian drains. Instructions are included, and we also offer a support video and backup technical help on request. A 6" / 150mm variant is also available.

8.8

Excellent

We scanned 259 products

We reviewed these offers relevant to the Rat Blocker For Drains within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Ratwall, RatGate Rodent Prevention System, Rat Blockers, Metex, Buffalo Pest Control, Roshield, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Rat Blocker For Drains in the market, we considered we took a deep dive into 1296 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Metex - Ratwall For 110mm/4" Pipe. Made From Robust, Corrosion Resistant Stainless Steel With A One Way Valve & Flap. This Rat Blocker For Drains Is Easy To Install By Hand Or At Street Level. We love many things about this product by Ratwall. What sets it apart from the competition is Stops rats through drainage system, Prevents rats' upward movement, Simple, secure installation process.
The best value product for most shoppers and where user satisfaction is continuously the highest is RatGate: 4" (110mm) stainless steel rat flap/barrier/blocker for clay, plastic and cast iron drainage pipes! Keep rats out of your property! by RatGate Rodent Prevention System based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Rat Blocker For Drains and the best cost-to-value ratio is Roshield Rat Drain Guard | Stop Rats within Drainage & Properties | Rodent Flap Control & Prevention Proofing (Stainless Steel 6"/150mm)at Roshield with a 14% discount.
Our list of the best Rat Blocker For Drains is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Rat Blocker For Drains in The UK

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We scanned 259 products

We concluded that: