This liquid form of ONA can be sprayed into the air to neutralize odors. Use a pistol grip sprayer or larger pump sprayer for desired effect. It can also be used to reconstitute the ONA gel. ONA (Odor Neutralizing Agent) products are designed using scientific principles of molecular bonding. Two odors can offset one another when they combine to form a bond. ONA's active ingredients come from a blend of 32 essential oils and plant-derived compounds that bond with and neutralize a wide array of odors. Fresh Linen scent.