Get rid of the mosquitos with these cheap pads. 

The thermacell mozzie repeller is a fantastic bit of kit but the pads are expensive. The solution is to get yourself done of these after market Topone pads for around a quarter of the price, yes you have to use 2 instead of 1 original but they still work out much cheaper. It's a no brainer.
The link below are the equivalent to the Topone brand.
100 x Mat Tablets Refill Repellent - for Insect Mosquito (& Tiger Mosquito) - Suitable for All Type of Electric Plug amzn.eu/d/iQ7Xivr