It will keep your fruit and vegetables fresh for up to 6 weeks longer and reduce your fresh produce wastage by up to 80%. KeepFresh is completely safe and will not harm you produce in any way. In fact, by protecting your produce against the harmful effects of ethylene gas KeepFresh helps your fruit and vegetables to retain their vitamins and nutrients until you are ready to KeepFresh works by removing ethylene gas. This is a gas that is produced naturally by fruit and vegetables as they age and ripen. The problem with ethylene gas is that it builds up in your refrigerator and it is responsible for the rapid deterioration of KeepFresh has been tested by independant university researchers and has been found to remove up to 99% of ethylene gas that is produced by fruit and vegetables as they are being stored. KeepFresh will give you 3 months protection from harmful ethylene gas in your refrigerator. At the end of 3 months simply replace the used KeepFresh sachet inside your green cartridge with a new KeepFresh refill sachet. Each sachet is designed for use in the green Keep Fresh Fruit N Vegetable Saver, removing the excess ethylene produced by aging and ripening fresh produce. It is non-toxic and will save you money by keeping your fruit and vegetables fresh for longer, reducing waste by up to 80%. Refresh your saver refills every 3 months and keep produce fresh for up to 6 weeks longer.