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🦟 Bye-bye bugs, hello backyard bliss!
Thermacell E-ZoneGuard Patio is a rechargeable mosquito repellent device that creates a 20-foot protection zone using a proprietary DEET-free formula. With up to 5.5 hours of battery life per charge and a 12-hour refill included, it offers safe, scentless, and smoke-free mosquito defense trusted by outdoor enthusiasts for over 25 years. Compact, TSA-compliant, and easy to use, it’s the ultimate upgrade for uninterrupted outdoor living.










| ASIN | B09MQ9KCHQ |
| Best Sellers Rank | #38 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #7 in Pest Repellents |
| Brand | Thermacell |
| Brand Name | Thermacell |
| Color | Blue |
| Customer Reviews | 4.0 out of 5 stars 21,192 Reviews |
| Included Components | Battery, Repellent Cartridge |
| Item Dimensions L x W x H | 3.75"L x 3.75"W x 4.25"H |
| Item Type Name | E Series 5.5 Hour Blue |
| Item Weight | 12.8 ounces |
| Manufacturer | Thermacell Mosquito Repellents, Inc. |
| Manufacturer Part Number | E55B |
| Manufacturer Warranty Description | THERMACELL GUARANTEE: Extend warranty to 3 years with registration (automatic 2-year warranty included). Backed by Thermacell Guarantee when shipped and sold by Amazon, if purchased on Amazon.com. See packaging for details. Includes repeller, 12-hour refill repellent cartridge, and USB charging cable. |
| Material | Durable |
| Material Type | Durable |
| Model Number | E55B |
| Number of Pieces | 3 |
| Power Source | Battery Powered |
| Product Dimensions | 3.75"L x 3.75"W x 4.25"H |
| Recommended Uses For Product | Repel Mosquitoes |
| Style | 5.5 hr battery + 12 hr refill - Blue |
| Style Name | 5.5 hr battery + 12 hr refill - Blue |
| Target Species | Mosquito |
| UPC | 843654005126 |
| Unit Count | 1 Count |
M**R
Patio Protection That Actually Works
I’ve been using the E‑ZONE GUARD Patio Max 12 HR BASE‑BLK for several evenings now, and I’m honestly impressed with how much more enjoyable my outdoor space has become. Mosquitoes usually ruin any chance of relaxing outside, but this device has made a noticeable difference in keeping them away without needing to spray anything on my skin or light messy candles. Setup was quick and straightforward. The rechargeable base is a huge plus—no more constantly buying batteries—and the USB‑C port makes it easy to keep powered. I also appreciate that it’s scent‑free and DEET‑free, so it doesn’t bother anyone sitting nearby. Once it’s turned on and warmed up, the coverage area is solid enough for my patio seating, and I’ve been able to enjoy evenings without constantly swatting or getting bitten. The design is sleek, lightweight, and easy to move around depending on where I’m sitting. I like that it comes with a refill to get started and replacing them seems simple enough. The 12‑hour base runtime is perfect for long nights outside, whether I’m relaxing, grilling, or hosting friends. Overall, this has been a great addition to my outdoor setup. It’s convenient, effective, and makes spending time outside so much more comfortable. I would absolutely recommend it to anyone who wants a cleaner, easier way to keep mosquitoes at bay.
B**E
Gets the Job Done 💪🏻
I'm a smoker, so I sit outside with my roommate's adorable pup many times throughout the day. We live in a bit of a wooded area, so in the summer and fall, the rain foments an insurrection of mosquitoes breeding/hatching like Solomon and his 700 concubines. I happen to be one of those weirdos who attracts mosquitoes as if I were sweating gold. With the newly found cases of west Nile in my state, I tried to be smart about keeping these leeches off me, to no avail. I tried the burning coils, sprays, ands a different manufacturer's repeller/fan. I used those products for a couple of weeks and would still find myself with anywhere from 2-8 mosquito bites every time I went back into the house. Upon recommendation, I quickly placed an order for same day delivery for this product. As soon as my product showed up I charged it and went back to sit in the same two spaces I regularly lounge and experienced ZERO mosquito bites. I was out there for almost 2hrs. I highly recommend this product, especially because of the extremely affordable price. To date, I've spent close to double the cost (including MULTIPLE replacement cartridges) on the inferior product. No odor, quiet motor, HUGE protection zone, easy loading, and VERY effective. Only thing I might change is the length of time it takes to fully charge, but even that is a miniscule portion of this high quality product. 💪🏻
A**R
Compact and modern design
I live in a warm part of the country, and my house has a lovely covered patio that I rarely use due to the mosquitos. I've tried a variety of products to try to get rid of the mosquitos, but so far, nothing has worked all that well. I was thrilled to try Thermacell's E-ZoneGuard Patio Max, because it looked like a modern and effective way to solve my mosquito problem. I really like the compact and sleek design of Thermacell's product. It's smaller than I expected, and looks attractive on my patio table. It was easy to use--just press a button, and a fine mist emerges from the top once it warms up. There are a few things to note the first time you use the product--you do need to charge it for a couple of hours before the first use, and you do have to be careful when handling the pesticide refill. I accidentally spilled a few drops the first time I inserted the refill, and the instructions are clear that you must wash your hands before eating, drinking or using the restroom--similar care instructions that I've seen with any insect repellent. It's good to note that this is not a natural/organic product, it does contain a pesticide and you must use care. Once I charged up the unit and put the refill in place, I set it outside and turned it on for 15 minutes before I wanted to use my patio. I liked that the device is silent, and there are no fragrances or odors. For my first 10 minutes outside, I did not notice any mosquitos in the area. Unfortunately, a mosquito eventually did find me and start biting me. I was sitting within 2 feet of the device, so it should have been working. Perhaps the 100 degree temperature or a breeze made the unit less effective for me on this occasion. I was a little disappointed, but I also feel that most mosquito repellents are not going to be 100% effective all the time. The device did seem to reduce the number of mosquitos on my patio, but I was disappointed that the one biting me did not seem bothered in the least. I think this device is worth checking out if you are someone who wants to use your outdoor space and reduce mosquito irritation. It may not be a miracle solution in every case, but I do like that it's easy to use and does not require applying chemicals to my skin.
A**1
Not Worth $55 but does work
I was quite surprised when I received this because I didn’t realize how small it would be. I’m honestly happy about it being so compact as It does what needs to be done yet isn’t an eye sore. I knew it only reaches max of 20ft but I don’t really think that is worth $55. I also found that if it’s windy, the mist/repellent diffuser doesn’t always work within the 20ft radius so it may seem like a smaller area instead of the 20ft. The charge only lasts up to 5hrs. It is not very loud and I like that it’s pet friendly. I appreciate that it’s rechargeable. I do think that there should be better instructions. The refills are around $15 for 40hrs and that is an added expense to think about. I feel like this would be great for the beach in areas where there are annoying flying bugs (but no wind/breeze) or camping. I’m not sure if this is common but the initial cartridge doesn’t seem very full and I’m not sure how it will last the 36hrs that is claimed.
P**R
The bug repellent that just works magic on my deck
When using this on our deck we had no issues with bugs of any sort. This was a perfect addition for our deck and put it under our deck table to keep it out of eye sight and provide the benefits of keeping the bugs away for the people and food being served. My family enjoyed that the device worked the full 12 hours without any issue. We went to charge and it took only a few minutes not using it to notice a difference on our deck with bugs starting to go back to being pests as before. There was no smell or anything you could notice- compared to using bug spray or tiki torch options and having to endure the smells of everything and then, also noticing the effect comes and goes whereas this is constant and continuous without issue. The fact this can be out of sight and still provide a large geniune impact was fantastic. It took about 2 hours to fully recharge after using it for the entire 12 hours.
K**3
Bugs Stay Away!
The Thermacell Patio Max is an excellent tool in the ongoing battle against mosquitos. I usually don’t go outside in the early evening, because I would get eaten alive if I did. Now I can set this out a few minutes before (ideally 10-15 min, but I don’t always remember that early), and the mosquitos stay far away. It does not work as well on breezy days, since the barrier gets blown away too quickly. But on days when the air is still (and the mosquitoes are out in force), this is perfect! I wish I had purchased one sooner!
O**K
Buzz Off!!
AWESOME product!! I have not gotten one mosquito bite since I starting using this product this spring. NOT one! ...and I'm that person that always gets bit. If mosquitos love you too and you're second guessing going outside this summer then try one of these units. FYI- This Old House Bob Villa gave a good rating and REI sells this brand so you know its good. The repellent refills are a bit pricey but for me its worth it to enjoy dinners on our patio again without being the main course!! Also note: they are rechargeable & come with a charging cord only, you will need to provide a charging plug/port. Charging can take several hours (I charge them overnight) however I believe there is an updated edition that comes with its own quick-charge charging station. Unit needs to be set outside and turned on 10-15 minutes prior to enjoying the outdoors. Covers a 20' diameter range. Cheers!
S**R
Good but pricey
Overall I love the Patio Max. It is easy to get started with it and easy to charge. It hold a charge well. It also seems to keep the mosquitos away pretty well and that is saying a lot when you live in Georgia. We have mosquitos everywhere. We love to sit on the porch in the evening which is when the mosquitos are out the most. All you have to do is turn it on and wait about 15 minutes and then go out to a covered porch. It doesn’t have a strong smell like a lot of other products which I really like. The only thing I don’t like about is if you forget to turn it on for a while before you go out it doesn’t work quickly. You have to turn it on for a while before you go out to have good coverage. I would continue to buy though, and recommend to friends and family.
R**I
Bad charging, complicated returns, unhelpful seller.
This item uses an outdated charging cable and does not hold a charge well. When attempting to return the item, the seller refused to provide collection and instead sent lengthy and complicated return instructions, eventually leading to the return window expiring.
E**.
Me funcionó muy bien
Muy eficiente, lo use dos veces y ninguna picadura tuvimos, pero NO DURA mucho el cartucho que viene, solo duró como 12 hr
C**T
Wonderful mosquito repeller
We live nearby a lake and struggle with mosquitoes at home and camping and this has been a blessing to keep them at bay!
E**N
Refill arrived half full.
The product wasn't packaged properly. The refill unit had leaked into its plastic bag and absorbed into the cardboard box. Not only do I have less repellant, but metofluthrin is toxic and not supposed to be handled.
E**A
Barra protectora pero repuestos caros
Buena barra protectora para que no se acerquen los mosquitos pero si hace mucho aire no está al 100 de protección También le di 4 porque los repuestos son algo caros
Trustpilot
3 weeks ago
3 weeks ago