Can cops dump your booze?
So I was at the liquor store the other day buying some scotch, and the clerk asked if I wanted a receipt. I said no and he ask if I was sure, then explained that the police can now seize and dump all your liquor if you fail to produce a receipt even if its unopened and out of reach. He then added that some of his customers have reported the cops doing this when they were walking home with their liquor. I asked about this to a friend on facebook and another friend gave me an anecdote:
"cops stopped a car of a friend of mine, asked to open the trunk, found a 12pack of beer, opened each bottle and slowly dumped it all away...some context: there was a house party and lots of drunk people. my friend's car wasx first to leave. friend was designated driver and totally sober, rest of the car not so. so cops stopped first car, and where dumping all the alcohol while rest of the party was going awayi have no idea how a "receipt" makes it illegal for cops to dump the alcohol (from your friend's comment)"
For clarity, I want to know what the law in Canada says about this. I am living in Alberta, and my friend that responded lives in Ontario. What if someone gives you a bottle of liquor as a present and you don't have the receipt?