Site: graykangaroo.com (Gray Kangaroo Personal Liquor Filters Welcome to the Future - Drink More For Cheap - Take The Stink Out Of Your Drink - The Original Vodka Filter - Save money on liquor - Make cheap liquor taste and act like expensive liquor - booze pictures vodka gin tequila whiskey as seen in stuff magazine maxim radio national public radio a patent pending activated carbon filter charcoal filter designed specifically to purify hard liquor Philadelphia magazine called it a Brita for booze, modern drunkard magazine asked if it would save the world or just revolutionize humanity? They say better booze cheaper but what they really mean is we ripped off this idea from the good people at Gray Kangaroo)