Ona Blocks are a fast and easy way to fight against odours at their source. Simply open and expose to the air or remove the block from the container. The duration of the block will vary but it will be effective for about 4 weeks relative to the airflow and environment around the block. To limit the amount of odour control and extend the life of the block, drill holes through the lid making it excellent for deodourising rooms.
Available in 3 scents, Polar Crystal, Fresh Linen and Pro.