ONA Liquid Bottle 922ml — Professional Odour Control for Indoor Growing
Best for: Growers needing flexible, natural odour neutralisation without the bulk of passive gels or the cost of full carbon filter systems
Our thoughts
ONA Liquid is one of those products that does exactly what it claims — neutralises airborne odours on contact using natural essential oils instead of just masking them. It's versatile enough to work in misting systems, spray bottles, or diluted for larger spaces. One we recommend a lot for growers who want control over their odour management without getting locked into passive solutions.
ONA Liquid is a concentrated water-based odour neutraliser formulated with natural essential oils to permanently eliminate airborne odours rather than mask them with perfume. At 922ml per bottle, you get a professional-grade solution that can be deployed flexibly — sprayed directly into the air, added to misting systems, or diluted for larger coverage areas. The formula works on contact, reacting with odour molecules and rendering them inert, leaving behind a fresh, pleasant scent. It's the kind of product that gives you control over your growing environment without having to choose between passive gels or expensive extraction systems.
How it compares
ONA Liquid sits in the flexible, active tier of odour control solutions.
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vs ONA Gel: Gel is passive and continuous; Liquid is active and flexible. Pick Liquid if you want control over timing and intensity
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vs ONA Blocks: Blocks are place-and-forget for small spaces; Liquid covers larger areas and integrates with misting systems
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vs Carbon filters: Filters handle volume; Liquid handles lingering smells. Most growers use them together for best results
- Natural formula throughout — no synthetic masking, no harsh chemicals
Usage guidance
Direct spray application
Use neat or lightly diluted in a hand sprayer. Spray into the air or around the growing space as needed. Works on contact, so a few spritzes covers effectively.
Misting system integration
Add to commercial misting systems or humidifiers. Dilute according to system manufacturer guidance. The neutraliser disperses through the mist and tackles airborne odours across larger areas.
Supplementary to extraction
Works brilliantly alongside carbon filter and fan setups. If extraction handles 80% of the smell, ONA Liquid catches the remaining lingering odours without doubling your setup costs.
Important note: ONA is powerful stuff. Never allow treated air to linger around flowering plants — the neutraliser can permanently affect plant flavour and aroma if it comes into prolonged contact. Use it in separate spaces, or time applications carefully.
Technical specifications
- Volume: 922ml (31 fl oz) per bottle
- Format: Concentrated liquid — requires dilution for misting systems
- Base: Water-based, easily dilutable
- Composition: Natural essential oil formula
- Safety: Safe around people, pets, and plants (when used correctly)
- Available scents: Fruit Fusion, Apple Crumble, PRO, Fresh Linen, Polar Crystal, Tropics, Lemongrass
- Case pack: 9 units per case (bulk option available)
Who this is for
- Indoor growers managing odour in shared housing or apartments
- Operations running supplementary odour control alongside carbon filtration
- Growers wanting active control — timing and intensity — over passive solutions
- Anyone with existing misting systems or humidifiers who can integrate odour control
- Commercial kitchens, pet facilities, or storage areas needing natural odour elimination
Particularly suited to growers who prioritise flexibility and cost-effectiveness over set-and-forget solutions.
Our take
This is proper professional-grade odour control at a price that makes sense alongside extraction or as a standalone solution for smaller spaces. Natural formula, multiple scent options, and genuine neutralisation — not masking.
If you're managing smell in an indoor growing setup and want more flexibility than a gel can offer, worth picking up. Does exactly what it should, without overcomplicating your air management.
