CBC has figured out some details on the case of vodka bottles filled not with vodka but water. Security video has revealed the same person returning several bottles that had been drained and refilled with water. There is also a plastic bottle angle. The stories don’t go into how such containers might be easier to open and then close in such a way that it is not obvious but now the LCBO says no plastic bottles will be accepted for return. Smirnoff and other makers sell a 750-milliliter lightweight “traveler” size. The clear PET (polyethylene terephthalate) bottles feature a unique “keystone” design on the necks and what Smirnoff calls an aesthetic appeal that enhances the rigidity and performance of the container. There is comment online about how bottles can be resealed to keep liquor by using a capsule shrink wrap. The advice says they are quite easy to apply and require heating a pan of water in which to dip the bottle.