Ona Liquid Available in 1L, & 4L and in polar crystal, Fresh linen scents ONA Liquid is a versatile product and can be used in many different applications. ONA Liquid can be added to commercial misting systems, humidifiers or simply sprayed freely into the air to neutralize airborne odors on contact. ONA Liquid is water based and can easily be diluted for safe and effective washing of odor saturated garments. ONA Liquid can also be added to exhausted ONA Gel to reconstitute the gel. If this is done, we advise you to agitate the solution occasionally, as the ONA Liquid has a different formulation from the ONA Gel and may develop a film on the top. This film will prevent the optimal release of the active ONA ingredients.