Our refill bottles / refills / replacement cartridges are available in 8 sizes with a burn time of up to 120 hours.They are produced in Austria and have been awarded the Austria seal of approval. The bottles are made of recyclable PET.Our refill bottles always look like new - from the first hour to the end.The exchange bottles are available in three different versions:CandolaCandola Mosquito StopGreenlineOur refill bottle with Mosquito Stop additive removes annoyinginsects reliably and quickly:without acrid citronella smell - delivers perfect effectworks outdoors and in closed roomsharmless to humans and petsBurn time up to 70 hoursThe Greenline series is also available with a Mosquito Stop