Description
ONA Air dispenser’s allow the smell of the ONA block to be mixed with any odours you have in your air duct so ONA can start doing its work. Just attach to your ventilation system, insert the desired number of ONA blocks and any unwanted odours will be removed from your ducting, quickly, effectively and permanently. In area’s of very high odour, ONA’s duct dispensers should be used in conjunction with other smell reducing methods.