My wife purchased one box of the Sani Sticks 360 at Kmart to see if the TV advertisements were all they claimed to be. She used the entire box of 24 sticks in her bathroom sink. The sticks DID NOT keep her sink from closing up. The sticks DID NOT give off any lemon-scented odor at any time. A total waste of money. Do not buy this product.
Bottom Line: No, I would not recommend this to a friend