Duck Toilet Liquid Rim Block Refill Duo, 3-in-1 Toilet Bowl Cleaner, Cool Mist, 55 ml, Pack of 12 ( 6 x 2 Refills) Duck Toilet Liquid Rim Block Refill Duo, 3-in-1 Toilet Bowl Cleaner, Cool Mist, 55 ml, Pack of 12 ( 6 x 2 Refills)