Thermacell Portable Adventure MR300 Mosquito Repeller (Black)

(8 customer reviews)


With no batteries or cords needed, the portable repeller is ideal for hunters from the tree stand to the duck blind, as well as on-the-go adventures like fishing, camping, hiking and more. Comes in various colors.

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The Thermacell Portable Mosquito Repeller is easy to use and provides hours of scent-free, mess-free mosquito defense up to 15 feet per repeller. Includes one repeller, one 12-hour fuel cartridge, and three 4-hour repellent mats.

  • Portable Adventure MR300 creates a 15-foot zone of protection against mosquitoes.
  • Powered by a safe and compact fuel cartridge. Emits scent-free repellent that drives away mosquitoes.
  • Repel mosquitoes without DEET sprays or lotions on your skin.
  • 12 hours of mosquito repellent and fuel included. Unscented repellent mats last up to 4 hours each and change color when time to replace. No mess and easy to refill.
  • Our synthetic allethrin formula is inspired by repellent extracts found in plants. Independently tested and EPA reviewed for safety & effectiveness.  People and pet friendly.
  • Extend warranty to 2 years with registration (automatic 1 year warranty included).  See packaging for details.
  • Includes: One repeller, one 12-hour fuel cartridge, and three 4-hour repellent mats.

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Additional information

Weight 0.34 lbs
Dimensions 8.2 × 6.3 × 2.5 in
Package Weight

0.34 Kilograms

Item Dimensions LxWxH

7.8 x 2.9 x 1.8 inches

Item Weight

0.4 Pounds

Brand Name


Country of Origin


Warranty Description

1 year.

Model Name

Thermacell MR450 Armored Portable Mosquito Repellent Black; Features ZoneCheck Quiet Ignition and Rubber Grip; Provides 15-Foot Zone of Mosquito Repellent; Long-Lasting Refills; No Spray or Scent


Suggested Users


Number of Items


Part Number


Model Year




Included Components

Mat Fuel Cartridge


Sport Type

Boating Climbing Camping & Hiking Fishing Outdoor Lifestyle

Target Species




Date First Available

December 18 2019


Thermacell Repellents Inc.

8 reviews for Thermacell Portable Adventure MR300 Mosquito Repeller (Black)

  1. Christine Blanchette

    WOW! Ça fonctionne vraiment.Je suis tellement contente de mon achat! Ça fonctionne vraiment. Les maringuoins étaient en train de me rendre folle à chacune de mes sorties à l’extérieur. Maintenant, je n’ai plus aucun maringuoin autour de moi. Je l’ai testé encore hier lors d’un spectacle en plein air. Nous étions tous assis par terre et je voyais les maringuoins voler à travers la foule mais jamais aucun ne s’est approché de nous. AUCUN!! Je n’en revenais pas! Ça me fait plaisir de partager mes commentaires car c’est aussi en lisant ceux-ci que mon choix s’est arrêté sur Thermacell et je ne le regrette pas une seconde. Merci!

  2. VV

    Wasted eveningWhat to start with… It smells. And when you wear it with the belt clip – the vapors it produces go directly up to your nose.I was really patient giving it some time to warm up and to work another 30 minutes before starting to judge.So, today was a beautiful sunny evening, about 21 degree Celcius and no wind. I couldn’t resist to go out with my wife and kids to the park. But this time I told to rely on me and to leave the mosquito sprays at home. God I was wrong! Mosquitos did not react to this device at all.There was some odor and some smoke coming out but it didn’t seem to bother them at all. On the pictures you see the device that works in the same place for about 20 minutes with blue light ON from the beginning (meaning it’s hot and running). Total working time – around 1 hour. The only thing I might think is the defective repellent mat. Anyone?

  3. Anne C

    Great product!I love this! The no-see-ums are terrible right now, and this keeps them away.

  4. Mark Glover

    very upsetI am very upset with this product. They advertised it on the Wall Street Journal as an “all natural mosquito repellent.” I get it in the mail and read the ingredients. Listed are “petroleum distillites”. I will be returning it.

  5. R. Carvalho

    Don’t believe all the positive reviews – it doesn’t workHad this thing running for close to an hour before I went outside to eat dinner right in front of it. It wasn’t even windy at all. The air was still. I saw the smoke rising off of the mat. I still was being swarmed by mosquitos. I thought, maybe I should put it on the ground because smoke rises. Nothing. Mosquitos were still attacking like crazy. Had about 5 of them swarming around me and got bit badly. Ugh. I was really hoping this thing was going to work. Back to DEET; the only thing that truly works.

  6. Jim Pierce

    Didn’t work for me. Useless for my needs. I purchased this as it’s advertised as working for flies as well as mosquitos. It was easy to operate and appeared to function properly. It showed the little orange indicater, small wisps of “smoke” occasionally. I was excited about it. Waited for hours. Flies were crawling on it. Didn’t try for mosquitos and perhaps, it functions well for that.

  7. music guy

    WARNING – EXTREMELY TOXIC TO HUMANS, CATS, FISH & BEESShort-term dermal exposure to allethrin may cause itching, burning, tingling, numbness, a feeling of warmth. Exposure to large doses by any route may lead to nausea, vomiting, diarrhea, hyperexcitability, incoordination, tremors, convulsive twitching, convulsions, bloody tears, incontinence, muscular paralysis, prostration and coma. Persons sensitive to ragweed pollen are at increased risk from exposure to allethrin. Allethrin is a central nervous system stimulant. Heavy respiratory exposure caused incoordination and urinary incontinence in mice and rats. Exposure to allethrin can be fatal to bees, cats, and fish. May cause asthma in some humans.

  8. Valerie S.

    Perfect for this mosquito magnet!I have used this a few weeks on our patio at home and have yet to be bitten while using it. I’m usually that person who can sit in a group where no one will get bitten but I’ll get bitten 20 times. So I’m always desperate to find something that keeps mosquitos off of me. I love this thing so far. The only downside is replacing the cartridges which don’t last quite as long as I’d hoped they would but as long as it keeps working, I’ll keep replacing them! And I LOVE not having to cover myself in DEET, and then having to shower again when I come in from outside just to get the sprays off of me. I do keep the unit right beside me or I hold it in my hand and wave it around my area every now and then. My husband laughs but hey, it’s working so far!

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