ONA odour neutralising agent, the number one and multiple award winning hydroponic odour neutraliser in the market. Use ONA to make those unwanted smells disappear naturally. Plants, pets, garbage, smoke, germs, mildew – all submit to the power of ONA odour neutralising agent. A powerful and advanced blend of 32 essential oils that are formulated to permanently eliminate even the nastiest smells, naturally. It is not a masking agent. It is non toxic, environmentally friendly and safe to use around people pets and plants. ONA is a true odour neutraliser, directly bonding with the odour molecules to render them null and inert – safely and completely.