Can this be use around boiler pipe?

It's worked fine around central heating pipes in floors Check working temps on tube to see range it covers

It it suitable for bigger gapps .like around 20 x 10 cm ? If not, what would be the righy solution?

Not sure what the depth of your hole is or where it is. That size would have to be done in stages if just using this and it takes a few days to dry. Wire mesh - available on Amazon might be easier in combination with this?

How thick is this sealant i.e. how small can I cut the nozzle hole to? I have a fiddly job and need to add a length of tube

It isn’t that thick so you can cut the tube quite small. Takes longer but you can always increase the size.

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RENTOKIL MOUSE & RAT GAP SEALANT - Waterproof Sealant WIth An Anti-Chew Sticky Core - Blocks Entry Points To Prevent Rodent Access - Easy to Apply - Poison Free - 300ml, White | With An Anti-Chew Sticky Core - Blocks Entry Points To Prevent Rodent Access - Easy To Apply - Poison Free

RENTOKIL MOUSE & RAT GAP SEALANT - Waterproof Sealant WIth An Anti-Chew Sticky Core - Blocks Entry Points To Prevent Rodent Access - Easy to Apply - Poison Free - 300ml, White | With An Anti-Chew Sticky Core - Blocks Entry Points To Prevent Rodent Access - Easy To Apply - Poison Free

Product ID: 50797999

💧Waterproof sealant

🦷Anti-chew sticky core

🛠️Easy application

$38.19

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Description

🚫🐭 Seal the deal, stop the squeal!

POISON FREE PROTECTION - Safe for your home and family while delivering expert-grade rodent defense.
UNCHEWABLE STICKY CORE - Innovative anti-chew formula stays tacky inside, deterring even the toughest gnawers.
QUICK SIMPLE APPLICATION - Applies smoothly with a caulking gun for instant sealing—no professional help needed.
TRUSTED PEST CONTROL LEGACY - Backed by 100+ years of Rentokil expertise, bringing professional-grade solutions to your DIY toolkit.
RODENT PROOF WATERPROOF SEAL - Blocks entry points with a durable, weatherproof barrier that keeps pests out rain or shine.

Rentokil Mouse & Rat Gap Sealant is a 300ml waterproof, poison-free sealant designed to block rodent entry points. Featuring a unique anti-chew sticky core, it forms a durable, weatherproof barrier that rodents find unpleasant to gnaw through. Easy to apply with a caulking gun, it offers a reliable, professional-grade solution trusted by Rentokil’s century-long pest control expertise.

Specifications

ASIN	B01DKA14OW
Best Sellers Rank	5,366 in DIY & Tools ( See Top 100 in DIY & Tools ) 122 in Sealers
Customer Reviews	4.3 4.3 out of 5 stars (599)
Date First Available	29 Mar. 2016
Item model number	FMS01
Manufacturer	Rentokil
Part number	FMS01
Power source type	AC
Product Dimensions	5 x 5 x 23.5 cm; 240 g

Reviews

I**S

Works well, stays soft

This works well. Not so easy to spread as silicone or caulk. It’s also quite messy so be cateful. Despite what others have said it does cure but still stays a bit soft. Kind of like putty. Not an issue though as you’ll use it in places nobody can see.

23.06.2026

K**R

It's worked ok for a bit not every time

8.07.2026

S**E

Perfect for the job, if a little pricey

Perfect for the job, although I wish it came it smaller sizes as I still have about 3/4 left and it's quite expensive.

29.04.2025

I**N

Great

great product and done the job perfectly.

22.01.2026

S**D

Not dry after 9 days and is still soft

It’s been 9 days since I used this product and it’s still soft and wettish, I used it for indoors and not sure why it’s not 100% dry yet

15.01.2026

B**X

Good

Did the job of sealing up gaps in my home. I coated it above wire mesh wool for extra peace of mind and so far so good..nothing has chewed through old entry points

21.11.2025

P**F

Blocking Mouse entry

The product was delivered promptly. It is simple to use and (so far) effective. The metallic content should deter any nibbling.

18.12.2024

B**J

Excellent

Great for filling holes up to stop rats and mice. Has there’s bit of wire wool in sealant

30.09.2025

É**C

Très chargée en limaille de fer très satifesant

Très satisfaisant pour moi

7.09.2024

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$38.19

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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