The ONA Liquid super concentrate can be added to commercial misting systems, humidifiers or simply sprayed freely into the air to control airborne odors of the entire room. Concentrate available in 1 litre, 4 litre and 20 litre sizes. Liquid concentrate also available in a handy 125ml or 500ml pump sprayer, which is excellent for hundreds of greenhouse and household purposes. Instantly spot treat and source of smell on contact. Spray directly into the air to neutralize air borne odors.