---
product_id: 92163958
title: "Thermacell MR300 Mosquito and Midge Protector Includes 3 x 4hr Mats and 1 x 12hr Cartridge Easy to Use, Highly Effective DEET-Free No Spray 20 sq m Zone of Protection - Graphite"
brand: "thermacell"
price: "$76.34"
currency: USD
in_stock: true
reviews_count: 13
category: "Thermacell"
url: https://www.desertcart.us/products/92163958-thermacell-mr300-mosquito-and-midge-protector-includes-3-x-4hr
store_origin: US
region: United States of America
---

# 4 hr mat duration 12 hr fuel cartridge 20 sqm protection zone Thermacell MR300 Mosquito and Midge Protector Includes 3 x 4hr Mats and 1 x 12hr Cartridge Easy to Use, Highly Effective DEET-Free No Spray 20 sq m Zone of Protection - Graphite

**Brand:** thermacell
**Price:** $76.34
**Availability:** ✅ In Stock

## Summary

> 🦟 Outsmart mosquitoes, not your style — stay protected, stay social!

## Quick Answers

- **What is this?** Thermacell MR300 Mosquito and Midge Protector Includes 3 x 4hr Mats and 1 x 12hr Cartridge Easy to Use, Highly Effective DEET-Free No Spray 20 sq m Zone of Protection - Graphite by thermacell
- **How much does it cost?** $76.34 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/92163958-thermacell-mr300-mosquito-and-midge-protector-includes-3-x-4hr)

## Best For

- thermacell enthusiasts

## Why This Product

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

## Key Features

- • **DEET-Free, Skin-Friendly Defense:** Repel mosquitoes without harsh chemicals or sprays—comfort meets safety for you and your pets.
- • **Effortless 20 sqm Mosquito Shield:** Create your personal no-bite zone instantly—perfect for backyard evenings or outdoor adventures.
- • **Portable & Rechargeable Convenience:** Compact graphite design with easy-to-replace mats and fuel cartridge keeps you protected anywhere.
- • **Fast-Acting Protection in 15 Minutes:** Get up and running quickly with reliable, consistent repellent power that won’t fade mid-event.
- • **EPA-Reviewed & Environmentally Minded:** Scientifically tested formula that’s tough on pests but gentle on your outdoor ecosystem.

## Overview

The Thermacell MR300 is a portable, DEET-free mosquito and midge repellent device that creates a 20 square meter protection zone using a 12-hour fuel cartridge and 4-hour repellent mats. It activates quickly within 15 minutes, providing a safe, unscented, and EPA-reviewed solution ideal for outdoor activities like camping, gardening, and fishing without applying sprays on skin.

## Description

Thermacell MR300 Mosquito and Midge Protector Includes 3 x 4hr Mats and 1 x 12hr Cartridge Easy to Use, Highly Effective DEET-Free No Spray 20 sq m Zone of Protection - Graphite : desertcart.co.uk: Garden

Review: Recommended gardening tool for Scotland - This does keep the midges away.
Review: Great product - Purchased this product as I used to have one in Australia and they work well. The cartridges aren’t cheap to replace but if you remember to turn off the machine they will last 2/3 evenings. They do keep the mosquitos away once it warm up. Certainly worth buying so you can enjoy being outside in the evening.

## Features

- Contains gas under pressure; may explode if heated.
- Extremely flammable gas.
- Harmful if inhaled.
- Harmful if swallowed.
- Use biocides safely. Always read the label and product information before use.
- Very toxic to aquatic life with long lasting effects.
- MOSQUITO PROTECTION THAT WORKS: Thermacell effectively keeps mosquitoes up to 20sqm away; works fast, get max protection in 15 minutes; easy to use; portable device is optimal for backyard, camping, fishing, hunting and more
- EFFECTIVE 15FT ZONE TECHNOLOGY: Engineered to precisely diffuse repellent, creating a 20sqm zone of mosquito protection; consistent repellent protection won’t weaken over time; powered by a safe and compact fuel cartridge
- REPEL MOSQUITOES IN AIR, NOT ON YOUR SKIN: Repel mosquitoes without DEET sprays or lotions on your skin; unscented repellent mats last up to 4 hours each and change colour when time to replace; no smoke, no flame and easy to refill
- PROPRIETARY FORMULA: Independently tested and EPA reviewed for safety & effectiveness; people and pet friendly; for outdoor use only
- INCLUDES: 1 x protection device, 1 x 12-hour fuel cartridge, 3 x 4-hour repellent mats

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DW2TRYB |
| Best Sellers Rank | 17,332 in Garden ( See Top 100 in Garden ) 146 in Fly Control |
| Customer Reviews | 4.2 4.2 out of 5 stars (374) |
| Date First Available | 20 Jun. 2018 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Department | Unisex |
| Item model number | THCMR-300L |
| Item volume | 300 Litres |
| Manufacturer | Thermacell |
| Material type | Plastic |
| Package Dimensions | 27 x 17 x 6 cm; 340 g |
| Part number | THCMR-300L |

## Product Details

- **Brand:** Thermacell
- **Item form:** Aerosol
- **Item volume:** 300 Litres
- **Material feature:** Portable,Lightweight,Deet-free
- **Scent:** Unscented

## Images

![Thermacell MR300 Mosquito and Midge Protector Includes 3 x 4hr Mats and 1 x 12hr Cartridge Easy to Use, Highly Effective DEET-Free No Spray 20 sq m Zone of Protection - Graphite - Image 1](https://m.media-amazon.com/images/I/71KiL+0YjoL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: 15sq foot shown on advertising picture while 20sq meters stated in written description. This is a Big Difference. Which is correct please?**
A: It's extremely difficult to give an accurate answer on this as depends if the air is dead still or not. All I can say is that this bit of equipment has proved itself several times when battling with extremely aggressive Scottish midgies.

**Q: Can you refill the Butane Gas Cartridges?**
A: Have seen someone on YouTube doing it but I wouldn't advise it..

**Q: How to use it? Does it stand in an area you sit in while camping? Or do you have to hold it?**
A: We usually put it on our picnic table and that protects the area we sit. You don't need to hold it we lay it flat with the black grid facing up. We have tried using on the move and it doesn't work well like that but when in camp it works really well.

**Q: Can I use this inside a summerhouse, with the doors open?**
A: The instructions (inside the box) state that the device should not be used in a confined space.  It  There is risk attached to using in a summerhouse even with the doors open. I would suggest asking the manufacturer for further guidance.  I now use a plug in device from Jungle available from Amazon or currently on offer in Wilko.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Recommended gardening tool for Scotland
*by P***. on 10 August 2025*

This does keep the midges away.

### ⭐⭐⭐⭐ Great product
*by R***. on 5 April 2024*

Purchased this product as I used to have one in Australia and they work well. The cartridges aren’t cheap to replace but if you remember to turn off the machine they will last 2/3 evenings. They do keep the mosquitos away once it warm up. Certainly worth buying so you can enjoy being outside in the evening.

### ⭐⭐⭐⭐⭐ No midgie bites.
*by A***R on 30 October 2025*

Used for whole season. And I have no bites. Great better design than older ones that broke easily . Easy to use. But gas cartridges are a bit pricey.

## Frequently Bought Together

- Thermacell MR300 Mosquito & Midge Protector; Includes 3 x 4hr Mats & 1 x 12hr Cartridge; Easy to Use, Highly Effective; DEET-Free; No Spray; 20 sq m Zone of Protection - Graphite
- Thermacell Midge and Mosquito Protector Standard Refill Pack Compatible All Thermacell Fuel Powered protectors

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-09*