yes many times. I use both the 5 litre and 10 litre boxes for longer term storage. You can re use the bags a few times (after sterilising) if you are careful not to push the tap in no more than 2 clicks. I recently started to use 5L food grade jerry cans in place of 5L water bottles as they as somewhat more robust, this type of thing; http://www.ebay.co.uk/itm/New-8-x-5...rier-Bottle-/350790349202?hash=item51acbbf192
