 Easy to use, doesn't streak, will remove fingerprints, grease, and water marks. You can find them at most Ace, True Value, Do It Best hardware stores, Drug Mart, Giant Eagle, Marks, Walmart.com, and Amazon. Hey, Gary Sullivan here for the plumbing pros at Roto-Rooter Plumbing and Water Cleanup. They've been trusted and recommended for almost 90 years, coast to coast.