Over time, a sticky odour-causing residue can form in your washer, causing an unwanted odour. Affresh washer cleaner removes and prevents this residue, which can occur in all brands of HE washers. Used just once a month, it penetrates deep into the machine, breaking up residue better than bleach and keeping your machine fresher and cleaner. | Whirlpool affresh Washer Cleaner - 3 Pack