---
product_id: 62740685
title: "PSMR42 Rat and Mouse Weatherproof Blocks, Black, 11.5 x 11.5 x 11.5 cm"
brand: "rentokil"
price: "$49.02"
currency: USD
in_stock: true
reviews_count: 9
category: "Rentokil"
url: https://www.desertcart.us/products/62740685-psmr42-rat-and-mouse-weatherproof-blocks-black-11-5-x
store_origin: US
region: United States of America
---

# Fast-acting formula Compact 11.5cm cube size Weatherproof durability PSMR42 Rat and Mouse Weatherproof Blocks, Black, 11.5 x 11.5 x 11.5 cm

**Brand:** rentokil
**Price:** $49.02
**Availability:** ✅ In Stock

## Summary

> 🐭 Outsmart pests before they outsmart you!

## Quick Answers

- **What is this?** PSMR42 Rat and Mouse Weatherproof Blocks, Black, 11.5 x 11.5 x 11.5 cm by rentokil
- **How much does it cost?** $49.02 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/62740685-psmr42-rat-and-mouse-weatherproof-blocks-black-11-5-x)

## Best For

- rentokil enthusiasts

## Why This Product

- Trusted rentokil brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Discreet:** 11.5 x 11.5 x 11.5 cm blocks fit seamlessly into tight spots, maintaining a clean, professional environment.
- • **Rapid Rodent Control:** Fast-acting bait formula ensures quick elimination of rats and mice, saving your space from infestation.
- • **Safe & Compliant Use:** Formulated with biocides that require careful handling, ensuring responsible pest control for your home or office.
- • **All-Weather Protection:** Blocks stay effective rain or shine, no need to worry about moisture compromising performance.
- • **Trusted Brand Reliability:** Rentokil’s proven expertise means you’re using a product with a 4.3-star rating and thousands of satisfied users.

## Overview

Rentokil PSMR42 Weatherproof Rat and Mouse Blocks are compact, durable bait blocks designed for effective rodent control in all weather conditions. Each 11.5 cm cube contains a fast-acting formula trusted by professionals, backed by a strong customer rating and proven performance to keep your space pest-free.

## Description

Product Description Rentokil Mouse & Rat Weatherproof Blocks - 10x20g Sachet Box Contains 10 x Rentokil PSMR42 Rat and Mouse Weatherproof Blocks

Review: This works and rats love it! - The only rat killer that works! Fast delivery.
Review: Good product - This is the second tub I have bought of these over time. Each time I have needed to use them they have worked ok. I found it takes four to six cubes to work on what seems to be a family of three or four rats. I found them more effective than the sealed bags.

## Features

- Contains 1,2-benzisothiazol-3(2H)-one; 1,2-benzisothiazolin-3-one(2634-33-5). May produce an allergic reaction.
- May cause damage to organs (blood) through prolonged or repeated exposure.
- To avoid risks to human health and the environment, comply with the instructions for use.
- Use biocides safely. Always read the label and product information before use.
- Rentokil Mouse & Rat Weatherproof Blocks - 10x20g Sachet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BFPBL8V |
| Best Sellers Rank | 6,928 in Garden ( See Top 100 in Garden ) 239 in Rodent Control |
| Customer Reviews | 4.3 4.3 out of 5 stars (540) |
| Date First Available | 13 Mar. 2018 |
| Item display height | 11.5 centimetres |
| Item display length | 11.5 centimetres |
| Item display weight | 0.26 Kilograms |
| Item display width | 11.5 centimetres |
| Item model number | PSMR42 |
| Manufacturer | Rentokil |
| Material type | Bait blocks |
| Part number | 5708-1 |
| Power source type | AC |
| Product Dimensions | 11.5 x 11.5 x 11.5 cm; 240 g |

## Product Details

- **Brand:** Rentokil
- **Colour:** Black
- **EU Spare Part Availability Duration:** 1 Years
- **Is electric:** Yes
- **Material:** Bait blocks
- **Number of pieces:** 10
- **Product dimensions:** 11.5L x 11.5W x 11.5H centimetres
- **Style:** Rat and Mouse Weatherproof blocks
- **Target species:** Mouse, Rat
- **Unit count:** 1.0 count

## Images

![PSMR42 Rat and Mouse Weatherproof Blocks, Black, 11.5 x 11.5 x 11.5 cm - Image 1](https://m.media-amazon.com/images/I/81mqlFaZHzL.jpg)

## Questions & Answers

**Q: How long does it take for the rat to die after ingestation?**
A: As mentioned on the front of the packet, this kills in one feed. We unfortunately do not have a specific time for for when this fully works.

**Q: Anyone know if birds will peck at this? Rats I want to get rid off,, not my Robins :]**
A: I would only use with a bait box, which will stop birds,  pets and children from getting to the blocks, the one I purchased already had blocks in so was ready to use. It worked after one feed as no evidence of being eaten again so suggests it really does kill after one feed. So for this reason I would want to be happy only the rats and mice can get to the blocks, so if you can afford to buy the bait box.

**Q: Put bait blocks in 2 places last night - this morning both blocks totally gone . Do they usually take the whole block away?**
A: Yes what you need to is keep putting them out until they no longer take them. Then you know you have got rid of the problem. Don’t worry if you have to put quite a few blocks out. What l do is every now and again l put a couple of blocks just to check if they are still about hope this helps

**Q: Will these hurt squirrels**
A: I put these little nuggets in a bait box and found them very effective as long as there is no other source of food for rats or mice to eat nearby, i.e. bird food.  
Entry to the box is too small for squirrels.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This works and rats love it!
*by C***Z on 23 October 2025*

The only rat killer that works! Fast delivery.

### ⭐⭐⭐⭐ Good product
*by L***L on 14 October 2019*

This is the second tub I have bought of these over time. Each time I have needed to use them they have worked ok. I found it takes four to six cubes to work on what seems to be a family of three or four rats. I found them more effective than the sealed bags.

### ⭐⭐⭐⭐⭐ Worked for a while!
*by A***R on 14 February 2026*

Good but still have rats in my greenhouse!

## Frequently Bought Together

- Rentokil PSMR42 Mouse & Rat Weatherproof Blocks - 10x20g Sachet, Black, 11.5 x 11.5 x 11.5 cm
- Rentokil FBSR02 Rat Bait Station, Clear, 26.6x17x11.3 cm
- Rentokil Rodine Rat & Mouse Killer Grain Bait - 6x25g Sachet, Black

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-13*