ONA Gel - Industry Leading Smell Control For long-lasting and natural odour control, you need Ona Gel – it’s industrial strength! Odours are eliminated using a blend of essential oils derived naturally from plants - it’s natural, non-toxic and environmentally safe. This stuff doesn’t just mask odours - it neutralises persistent odours naturally and permanently. Try it and you’ll be hooked. To use, just remove the lid and place your tub in the middle of your grow room. A potent vapour will slowly evaporate into your grow room over a period of weeks. It’s that easy. • Choice of scents• Industrial strength - blend of 32 essential oils and plant compounds• Doesn’t just mask – it eliminates foul odours• Reliable and long-lasting• Non-toxic and environmentally safe• Reliable, long-lasting odour control• 100% organic