i have a few old whiskey bottles i'm trying to clean and somebody told me to try draino. I have had my bottles soaking in a 5 gallon bucket with a full bottle of 32 oz (i think it's 32 oz) of CLR and it seems not to be doing anything. They have like white streaking/lines in them. they have been soaking for like 5 weeks. and i really cant tell any difference. someone had recommend to pour draino in them?