The ONA Block is an odour neutraliser in solid wax form containing 32 essential oils that are slow released, neutralising and destroying any airborne odours.

Ideal for small enclosed spaces. ONA Block isn’t a masking agent, it neutralises odours in the air, removing them completely.

Safe to use around people and plants which makes it an ideal addition to your grow room or adjoining rooms or can be used in conjunction with your ventilation system to neutralise odours in your ducting.

• Permanently removes unwanted odours from the air
• Ideal for small enclosed spaces
• Safe to use around people pets and plants
• Environmentally Safe
• Organic
• Available scents: Pro, Fresh Linen, Fruit Fusion, Tropics and Lemongrass

Free delivery on orders over £60*
- UK Mainland only

Standard Delivery £4.95
- Heavy / Large item surcharge £2 per item
- 1-3 Days**
- UK Mainland only
Express Delivery £8.95*
- Next Working Day**
- UK Mainland only
Scottish Highlands £15.95*
- 2-5 Days**

*Can not be used with Heavy / Large items
**If ordered before 2pm cut off

Please See Delivery and Returns page for more details.