Ona Gel and Blocks are available at Green Light Organic and Hydroponic Specialists, Cheltenham Hydroponics, Gloucester Hydroponics, Stroud Hydroponics, Bristol Hydroponics, Ross Hydroponics, Forest Hydroponics, Gloucestershire Hydroponics, Hereford Hydroponics, Tewkesbury Hydroponics, Monmoouth Hydroponics, Bredon, Hydroponics, Evesham Hydroponics, Malvern Hydroponics, Staverton Hydroponics,

Ona blocks are comprised of a secret blend of 32 essential oils. They are non- toxic, all-natural and safe to use around people, pets and plants. Ona blocks are a fast way to fight against odors at their source. Simply open and expose to the air or remove the block from the container. Duration of the block will vary but it will be effective for about 4-6 weeks relative to airflow and environment (temperature, humidity) around the block. To limit the amount of odor control and extend the life of the block, drill holes through the lid.


The ONA Block is ideal for small areas such as closets, foyers, attics, cars, gym bags, boats, kitchens, garbage cans, cupboards or vents. 

The ONA Block will release its powerful odor neutralizing agent and keep the location free from undesirable odors. Replace as necessary.

Available in our popular scents: Fresh Linen, Polar Crystal, PRO and all-new Apple Crumble!

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