ThermacellRechargeable Mosquito Repeller Refills; Advanced Repellent Formula Provides 20 Foot Protection Zone; Compatible with Thermacell E-Series & Radius Only; No DEET, Spray or Flame

I live in a very heavily wooded area with a ton of mosquitoes. I like to host outdoor gatherings in my backyard, but I hate having to wear bug spray or risk getting mosquito bites. Consequently, I bought thermacell a few years ago and have been absolutely thrilled with the results! Since purchasing it, my family and I have been able to comfortably sit outside on summer nights without wearing bug spray and have not gotten bitten once! Thermacell repellent is safe, effective and affordable. The refill cartridges last a long time and are very easy to insert and remove. I highly recommend them and will continue to buy and use them year after year.

Works. Cannot attest to a 20 square foot radius, but it does work great when close by. I got about 25 hours out of a cartridge, but another reviewer claims that if you put the little blue cap back on when it's not in use, it lasts longer, so I started doing that. Mosquitoes hate this stuff, I was getting swarmed until I turned it on and they *poof* all of a sudden disappeared. Needs to be charged up every 10 hours or so, good little gadget.

This is a very good way to keep mosquitoes away so I can enjoy sitting in my patio after dark. It works well however, the refills are expensive.

The Thermocell changed our outdoor experience. As long as we have plenty of the Thermocell refills I don't have to worry about my grandchildren, my family being eaten alive by pesky mosquitoes. These refills last for hours. I highly recommend it and will continue to buy it. You can place the thermacell anywhere and it's guaranteed to work. Since we've had these we no longer get bitten by mosquitoes.

I have always reacted strongly to bug bites. Mosquitos and other bitey bugs love me, and I get big reactions to their bites. Not a great combination, especially for someone who lives in a very buggy area in the Desert Southwest.I've tried lots of various bug deterrents, but Thermacell is the first one that has actually made a huge difference in my outdoor experiences.It takes a few minutes to warm up and create a barrier, so usually my husband takes it out and sets it up before we plan to go out. There is a detectable scent - I don't find it either pleasant or unpleasant, but it's there.But this thing works.Before we started using Thermacell, my daughter and I were getting dozens of bites, and were absolutely miserable. After we started using Thermacell, the bites went to near-zero.The refills are very easy to use, and they last an acceptable period of time. If we forget and leave one out overnight, we'll have to replace the refill, but if we use it only when we are outside, it lasts a while.

I originally purchased the thermosell rechargeable based off of a co workers recommendation. They seem to work well after being on for 10-15 minutes when I'm out in the barn at night farting around. Good enough that I bought a second one.The refills are a bit pricey but last longer than the one that comes with the device. This is my second purchase of refills.

A++ for effectiveness, just sat in our backyard, a whole group of us, at dusk, a warm humid day/evening under a gigantic sycamore tree where we always get bitten- and no one got a bite, no mosquitoes were even sighted or heard buzzing around. I’m very satisfied with the product’s effectiveness. 5 stars. However!! This photo shows a 40 hour refill after 5 hours of use - with how much was used up, there is no way this refill will last 40 hours! So that seems deceptive advertising, for the price. 2 stars max for the refill claim. So I've settled on 3 stars because I’m salty about that- but if you’re looking for an efficient product and you’re okay with the cost even for less hours of use, go for it!

This brand really works to ward off mosquitoes in our FL backyard. Bought the machine for hubby's bday, been buying refills for it every Summer now for 2yrs. It works!