Ona Gel - Polar Crystal. Ona is a complex formula using essential technology to destroy a wide spectrum of organic and non-organic odors. It is environmentally safe. Ona uses the latest technology to create the most efficient distribution and dispersion systems for their products. 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.