Rated 5.00 out of 5 based on 3 customer ratings
(3 customer reviews)
  • ONA Gel is an Incredibly powerful odour neutraliser
  • Permanently eliminates even the nastiest odours
  • Not a masking agent but an odour neutralisation agent
  • ONA Gel Quickly and effectively controls your odour problem
  • Natural Formula
  • ONA Works, Guaranteed!
  • Available in 4 sizes: 500ml, 1Ltr, 4Ltr & 20Ltr
  • Available in 5 scents: PRO, Apple Crumble, Polar Crystal, Fresh Linen & Tropics
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ONA Gel: Popular, Practical, Powerful

ONA gel is a complex mix of essential oils, suspended in a polymer gel. The essential oils are organically derived from plants throughout the world, non toxic and environmentally friendly, when the ONA gel is exposed to atmosphere the ONA particles are released into the air and neutralise any airborne odours, it comes into contact with. The ONA Gel odour neutralising agents are released in a controlled manner so that every drop of this excellent product is fully optimised.

ONA Gel Provides True Neutralisation

Once the ONA Gel is exposed to atmosphere the ONA particles disperse through natural evaporation and any odourous molecules they come into contact with will be neutralised. Unlike air fresheners, this is not a masking agent but a neutralisation agent.

There are 3 types of mechanisms involved in the neutralisation of odour molecules:

science of ona adsorption

science of ona absorption


ONA Gel is Non Toxic and Environmentally Friendly

ONA Gel is industrial strength, yet safe for home or business use, and can be used around people, pets and plants.
Accept no substitutes straightNon toxic, environmentally friendly and organic.

Don’t be fooled by imitations that are appearing in the market. This is the undisputed and original odour neutralising agent, serving the hydroponics industry since 1995.


ONA Gel is available in Pro, Fresh Linen, Polar Crystal Apple Crumble, Tropics .


Available in 428g Jars (6 per case), 856g Jars (6 per case), 3.6Kg Jars (4 per case), 3.8Kg Pails (4 per case) and 20Kg Pails.

Instructions for Use

Open the lid and leave the ONA gel to naturally evaporate for as long as the odour is present, occasionally shaking the jar to agitate up the contents. Alternatively a reduced amount of ONA Gel can be put into a smaller vessel and left until it has evaporated before topping up with more gel, thereby regulating the lifetime of the ONA Gel.

If a larger area is needed to be treated, or if there is an increased amount of odour, the ONA Breeze fan can be attached to the top of a 856g or 3.6Kg jar to increase the dispersion of product, although this will result in an increased consumption rate.

In extremely large areas we have the solution of using the 20Kg ONA Gel with the ONA Cyclone fan, which has 5 speed settings and provides odour control for up to 5,000 square feet.

ONA Gel 4j Apple Crumble

How to Use ONA Gel Efficiently

ONA Gel is our most popular product and is practical for almost any odour problems. However to get the most out of your Gel you should read these tips on how to use Gel most effectively.

The simplest way to use ONA gel is to just remove the lid and leave it around the infected area to naturally evaporate and disperse through the air. This is fine if you only have one area that needs treatment, however if there is a large area that needs to be neutralised then you will need a way to disperse the Gel further throughout the affected area. There are a few ways that this can be achieved:

The first is to use one of our excellent fan-type dispensers that will greatly increase the distribution of the ONA. The Breeze fan is designed to fit on the 856g and 3.6Kg jars.

Additional information

Weight N/A

428 g, 856 g, 3.6 Kg, 3.8 Kg, 20 Kg, 428g (500ml) Jar, 856g (1 Ltr) Jar, 3.6Kg (4 Ltr) Jar, 3.8Kg (4 Ltr) Pail, 20Kg (20 Ltr) Pail


PRO, Apple Crumble, Fresh Linen, Polar Crystal, Tropics

3 reviews for ONA Gel

  1. Rated 5 out of 5


    smells great , I use the fresh linen gel at home and work it can be used in all manner of places lovely

  2. Rated 5 out of 5

    Addloes Hydroponics

    We’ve been selling the ONA product range for many years.
    They have been copied but never bettered

  3. Rated 5 out of 5

    Grown Up Hydroponics

    The original and by far the best odour neutraliser on the market today. Customers keep coming back for more ONA year after year.

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