Tested for 2 years all over europe in houses hotels and restaurants both indoors and out the scentrel candle has received fantastic reports incredibly its 100 safe and natural yet guaranteed to kill or repel just about every known insect on the planet its not only effective against flies mosquitoes midges and daddy long legs but also against clothes moths and cockroaches simply place a candle in the mini disc set alight and it will fill the room with a knock down vapour thats ha