Duck 3 in 1 Rim Block Refill 2 pack | Wilko
Duck Cool Mist 3 in 1 Rim Block Refill 2 pack, each refill is designed to fight limescale, clean with every flush and leave behind a long-lasting, cool mist scent. Use in conjunction with your Duck Rim Block Unit (available to purchase separately). Simply click into place and attach to your toilet bowl. Warning: Keep out of reach of children.