15sq foot shown on advertising picture while 20sq meters stated in written description. This is a Big Difference. Which is correct please?

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.

Can you refill the Butane Gas Cartridges?

Have seen someone on YouTube doing it but I wouldn't advise it..

How to use it? Does it stand in an area you sit in while camping? Or do you have to hold it?

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.

Can I use this inside a summerhouse, with the doors open?

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.

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MR300 Portable Mosquito & Midge Repeller – 20sqm DEET‑Free Protection for Camping & Gardens

MR300 Portable Mosquito & Midge Repeller – 20sqm DEET‑Free Protection for Camping & Gardens

Product ID: 92163958

Details

Brand
Thermacell
Item form
Aerosol
Item volume
3.63 Fluid
Material feature
Portable
Scent
Unscented

⏳4 hr mat duration

🔥12 hr fuel cartridge

🛡️20 sqm protection zone

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Description

🦟 Outsmart mosquitoes, not your style—protection that keeps you in the moment!

EFFORTLESS MOSQUITO DEFENSE - Activate and enjoy up to 20 sqm of DEET-free protection—no sprays, no mess.
LONG LASTING REPELLENT MATS - Each mat works for 4 hours with a clear color-change indicator for timely replacement.
SAFE SKIN FRIENDLY FORMULA - EPA-reviewed, unscented, and free from harmful chemicals—repel bugs, not your skin.
PORTABLE READY FOR ADVENTURE - Lightweight graphite design fits seamlessly into your camping, fishing, or backyard setup.
POWERFUL 12 HOUR FUEL CARTRIDGE - Compact cartridge fuels continuous protection for half a day—perfect for extended outdoor sessions.

The Thermacell MR300 is a portable, DEET-free mosquito and midge repeller that creates a 20 sqm zone of protection using a 12-hour fuel cartridge and replaceable 4-hour mats. Its unscented, EPA-reviewed formula offers safe, effective, and smoke-free defense ideal for outdoor activities like camping, fishing, and backyard relaxation.

Specifications

ASIN	B07DW2TRYB
Best Sellers Rank	2,139 in Garden ( See Top 100 in Garden ) 166 in Fly Control
Brand Name	Thermacell
Country Of Origin	Thailand
Customer Reviews	4.2 4.2 out of 5 stars (150)
Global Trade Identification Number	00843654001692
Included Components	Inspect Repeller
Indoor Outdoor Usage	Outdoor
Item Form	Aerosol
Item Nype Name	MR300 Repeller
Item Volume	3.63 Fluid Ounces
Manufacturer	Thermacell
Manufacturer Part Number	THCMR-300L
Material Features	Portable,Lightweight,Deet-free
Model Number	THCMR-300L
Number of Items	1
Scent Name	Unscented
Size	12 g (Pack of 1)
Target Species	Mosquito
UPC	843654001692
Unit Count	12.0 gram

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TrustScore 4.5 | 7,300+ reviews

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C$4119

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In stock

Sold byAmazon NicaraguaDelivered 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 Nicaragua.

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