This Odour Neutralising Fresh Scent Active Smell Odor Eliminator Controller is the perfect solution to eliminate unpleasant smells in any room. With its continuous air freshening vapour, it effectively neutralises odours and leaves a light, fresh scent throughout the area. Simply unscrew the lid and place the ONA Gel pot in an elevated position for maximum effect. The neutralising power lasts for weeks and can be topped-up with ONA's liquid refills. Ideal for air ventilation and extraction, fans, filters & environmental control, hydroponics, and garden & patio use. Say goodbye to unpleasant smells and enjoy a fresh and clean environment with ONA Gel.