Ona Gel Pot 400g — Natural Odour Neutraliser for Indoor Growing Spaces
Best for: Growers needing portable, non-toxic odour control outside the grow room
Our thoughts
ONA Gel is the industry standard for a reason — it actually neutralises odours rather than masking them, and it's been doing it reliably since 1995. The 400g pot is a smart entry point if you're new to odour management or need temporary cover in smaller spaces. Simple to use, safe around people and plants, and it does exactly what it says on the tin.
Ona Gel Pot is a natural odour neutraliser formulated from 32 essential oils and plant-derived compounds suspended in a polymer gel. Unlike air fresheners that simply mask smells, ONA works through three active mechanisms — adsorption, absorption, and chemical neutralisation — to permanently eliminate unwanted odours at source. The 400g pot provides 4–6 weeks of continuous odour control depending on room conditions, making it an affordable, low-hassle solution for indoor growing spaces.
How it compares
ONA Gel sits in a different space to carbon filters and premium air purification systems.
-
vs. Carbon filters: Filters trap odours as air passes through; ONA neutralises them chemically. Filters last 2+ years, ONA lasts 4–6 weeks. Use both for comprehensive control.
-
vs. Ozone generators: Ozone damages plants and is toxic in high doses. ONA is non-toxic and plant-safe.
-
vs. Spray products: ONA works continuously through passive evaporation. Sprays are one-off temporary fixes.
Think of ONA as localized, passive odour management — not a complete system, but a reliable supplement that doesn't require any infrastructure.
Usage guidance
Placement
Position the pot in an elevated spot (table or shelf) roughly centre of the room you want to treat. Keep it outside the grow room itself — high-strength odour neutralisers can subtly affect plant aromatics if placed too close to flowering material.
Application
Partially open the lid and leave it to evaporate naturally into the air. Occasionally stir or agitate the gel every week or so to maintain full potency and even evaporation.
Sizing
A single 400g pot handles small-to-medium rooms effectively. For larger spaces, the ONA Breeze fan unit (1L or 4L options) speeds up evaporation and distribution.
Refilling
Once the gel drops below one-third capacity, you can top it up with ONA's liquid concentrate — no need to buy a new pot.
Technical specifications
- Format: Polymer gel in sealed pot
- Weight: 400g
- Active ingredients: 32 essential oils and plant-derived compounds
- Safety: Non-toxic, plant-safe, pet-safe, food-industry approved components
- Duration: 4–6 weeks (varies by temperature, humidity, air movement)
- Application method: Passive evaporation; no power required
- Available scents: PRO, Apple Crumble, Polar Crystal, Fresh Linen, Fruit Fusion, Tropics, Lemongrass
Who this is for
- Growers with small-to-medium rooms needing supplementary odour control
- Budget-conscious operators who want entry-level odour management
- Anyone using carbon filters who needs additional coverage in living spaces
- Growers wanting portable, setup-free odour solutions
- First-time buyers testing odour control without major investment
Best suited to spaces where convenience and non-toxic simplicity matter more than industrial-scale control.
Our take
ONA Gel is proper kit at a sensible price. It neutralises rather than masks, it's safe, and it doesn't require any electrical setup or maintenance beyond the occasional stir. The 400g pot is a solid entry-level odour control product that won't rinse your budget.
Use it outside the grow room for best results, combine it with carbon filtration if you're serious about odour control, and refresh every 4–6 weeks. Good time to buy while stock lasts.
