Calgon 4-in-1 Washing Machine Cleaner and Water Softener Tablets, Removes Limescale & Odours, Deep Clean, Units: 45 Tablets, Size: L Pack (Packaging May Vary)LIMESCALE SMACKDOWN Stops limescale buildup in its tracks, extending the life of your machine. ODOR KNOCKOUT Neutralizes unpleasant smells for fresh smelling laundry. DEEP CLEAN MISSION Removes stubborn dirt and residue, ensuring a thorough clean every time. WATER SOFTENING WIZARD Softens water to improve washing performance and prevent mineral build up. EASY TO USE Just toss a tablet in the drum with your laundry and run a hot wash cycle.