The 40 hour refill is great! However, this product does not have much of an impact on Tiger Mosquitoes!

It doesn't work well at all. Mosquitos still get me at a high rate. I have used other things that actually worked but they no longer make them.

I love my E55 units and these make them work. They last a good long time and they definitely keep the bugs away.

Convenient and useful. I love how this system works. Everyone is now carrying this product so it is easy to find replacements

It works!!!! I love this product and will recommend it to anyone. It really works for repelling mosquitoes

This works! I take it to the outdoor bars with me that are on creeks and I don’t get Bothered after about 10 minutes.

This has worked very well at allowing us to be outside on our patio with being annoyed by mosquitoes.

Works great on our deck. I decided to get two more. One to put by basement door and one in the garage.

Keeps the mosquitos away while sitting at dinner in an infested back yard! Unfortunate that the cartridges need to be changed so often.

The repellent refills are easy to use but rather pricey. One really needs to watch how much they use the product as a result.