List of products by brand ONA

ONA permanently neutralises odours using a natural formula of 32 essential oils. Non-toxic and eco-friendly, completely safe around plants and pets.

ONA: Professional Odour Neutralisation Through Molecular Science

ONA (Odor Neutralizing Agent) has been the industry standard for odour control since 1995. Developed in Canada, ONA products use a proprietary blend of 32 essential oils and plant-derived compounds that permanently neutralise odour molecules through chemical bonding rather than temporary masking. Originally engineered for industrial applications including sewage treatment and chemical processing facilities, this technology is now the preferred solution for indoor cultivators worldwide. At Plant and Flower, find ONA products in our ONA odour neutraliser category. Order before 2 PM for next-day delivery via Bpost across Belgium and the Benelux.

Neutralisation Technology

ONA operates through three complementary mechanisms: absorption, adsorption, and molecular pair bonding. Terpenes and essential oils within ONA formulations create chemical bonds with odour molecules, irreversibly neutralising them. Research initiated over 25 years ago demonstrated that terpenes diffused into the environment do not merely mask odours but permanently eliminate them at the molecular level. All ONA components are classified as generally recognised as safe, with established usage in food and cosmetics manufacturing, ensuring completely non-toxic operation around people, plants, and animals.

ONA Block Range at Plant and Flower

The ONA Block delivers professional odour control in a compact 170g solid format. Available in five variants to suit different preferences:

  • ONA Block PRO: near-odourless formula for pure neutralisation without any residual fragrance.
  • Fresh Linen, Apple Crumble, Polar Crystal, Fruit Fusion: four scented options leaving a pleasant aroma after neutralisation.

Ducting adaptors in 125 mm and 160 mm diameters enable direct integration of ONA Blocks into extraction systems. View the popular ONA Block PRO 170g with fast shipping via Bpost throughout Belgium and the Benelux.

Frequently Asked Questions About ONA

What is the delivery time for ONA products in Belgium?

Plant and Flower dispatches ONA orders within 24 hours when placed before 2 PM. We ship via Bpost to all addresses in Belgium and the wider Benelux region. A tracking code is provided as soon as your parcel leaves our warehouse.

Does ONA actually eliminate odours or just mask them?

ONA genuinely eliminates odours through molecular bonding, not masking. The blend of 32 essential oils and plant compounds creates irreversible chemical bonds with odour molecules, permanently neutralising them. This technology was originally developed for industrial-scale odour control applications.

Is ONA safe to use around growing plants?

ONA is completely non-toxic, manufactured with ingredients recognised as safe in food and cosmetics industries. However, position ONA Blocks outside the growing space or within extraction ducting rather than directly beside plants, as interaction with plant terpenes should be minimised during cultivation.

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