How do I replace toilet gels and rim-blocks?

Simply turn the ViFresh lid to the left or right until you hear a soft clicking sound. Lift the lid and remove the holder. Clean it under running water to remove any residue. Refill the holder with a new rim-block / toilet gel. Then return the holder to the flushing pipe and close the lid. Make sure that the seals have been cleaned and are dry and positioned correctly.