Thermacell Mosquito Repellent Rechargeable Adventure EX-Series EX90; Patio Shield with 9-Hour Battery, Includes 12-Hour Refill, Rubber Armor & Carabiner; Scent Free Bug Spray Alternative

It states that a 12 hour refill is included but unfortunately it wasn’t.

The product worked from the point of view no bites in the 2 hours sat outside but the capsule it came with had barely any liquid and looked like it had leaked and now NO REFILLS on Amazon and massively expensive refills off another site so be warned it works but Will be Expensive to Run if you can get refills.

This is great, Mozzies and midgies totally gone. Keep the little cap thay screws onto the liquid cartridge as it wilo evaporate when not in use. Otherwise completely excellent, even when its windy.

As mentioned in other reviews, this device works in keep mosquitoes away. It is extremely durable and easy to charge and use. It did take 2-3 hours to charge, so plan ahead. This repellant does NOT keep away other flying and biting insects, which in New England are black and green flies in the spring and biting midges (no-see-uhms) in the summer. They will find you, especially your legs, ankles, and feet which means you still have to use some type of topical repellant to be safe. The repellant cartridges for the device are pricey and reviews for the non-branded replacement cartridges do not seem too encouraging, so be prepared to pay premium for mosquito control. In my opinion, it is worth it since it makes sitting in my backyard more tolerable.

The promise: an electronic device that you can turn on to keep mosquitos away. The electronic part is a partial truth, as the electricity is just used as a source of heat, but it's an effective way of keeping mosquitos away. Thermacell devices, electronic or not, work by slowly releasing allethrin, an insect repellent. Low heat is used to make the repellent go into the air. Allethrin is mostly harmless to humans and pets, though it's recommended that you not ingest the repellent or use it near food. There is nearly no smell; the repellent itself is odorless, but the device sometimes releases a bit of smoke. The older fuel-based ones, which either use butane fuel or sit on top of an isobutane fuel canister, use felt mats to hold the repellent; you have to replace the mat after four hours of use. The electronic ones instead use a cartridge loaded with liquid repellent and a wick that slowly releases it; it can provide up to 40 hours of use from a single cartridge. The electric power is simply used to provide heat. Thermacell makes two versions of the electronic device. The more basic one has 6 hours of battery life. This is the upgraded one with a battery that lasts 9 hours, which is enough to keep the device powered for most day events. If you need more run time you can connect it to a USB power bank, or to an AC-powered charger if you're in a location where outlets are available. The cartridges are good for 12 or 40 hours of operation; the bigger ones will cover an entire weekend of camping if you connect it to a large enough power bank to keep it running that long. You have to supply your own charger; the Thermacell does not include one. The company says it will keep a 20 foot area clear. That's true on a reasonably calm day. Winds will carry the repellent away so the effective range is smaller on a windy day. If the winds are REALLY high you won't need to run it because the mosquitos won't be flying. Make sure not to lose or throw away the cap of the repellent cartridge unless you are certain you will use up the rest of its capacity in the current use session. You need to put it back on before you store the cartridge. I recommend keeping the cartridges, new or partially used, in a Zip-Loc bag to make sure you don't end up getting the repellent on other things; the cap is supposed to be enough, but belt and suspenders :)

An absolute gamechanger. My partner uses this all the time in our backyard and shed. We love that it's usb rechargeable! Shoutout to 'Camping with Steve' on Youtube. he uses this brand for all of his adventures and is the reason we decided to get one too.

Have used in patio situation, enclosed 3 side & a roof with zero wind, still getting mozzies after 1, 2 & 3 + hours after starting it more than once