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Gnat Off! Fungus Gnat Barrier

Gnat Off! Fungus Gnat Barrier

Regular price $22.00
Regular price $22.00 Sale price $22.00
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Containing a specially formulated mixture of pumice, course sand and neem granules, Houseplant Hoarder's Gnat Off creates a physical barrier on your pot plant soil to help prevent fungus gnat infestations. Due to its pure mineral base, the substrate offers no surface for fungi or pests to attack.

Gnat Off is free from harmful chemicals and synthetic pesticides.


Fungus gnats are one of the most common soil breeding pests indoor gardeners face.

Not only is having them flying around indoors unpleasant, they can also be detrimental to plant health. If present in large enough numbers fungus gnats can damage plant roots and stunt growth, particularly in seedlings and young plants.

If you have an active infestation, we recommend Super Ninja's Fungus Gnat Sticky Traps for rounding up gnats that are already airborne. Gnat Off will stifle larvae still present in the soil and help prevent repeat infestations.


Apply a 2cm thick layer of Gnat Off to the surface of your potting mix. Press down to help create a soil barrier. Top off as needed.

Just note that using a barrier like this may cause your soil to retain more moisture than usual, so monitor this and adjust your watering accordingly.

Read our blog for more tips: How to Get Rid of Fungus Gnats

$10 Shipping, Free Over $149

We ship Australia-wide via Parcel Post ($10, free over $149) or Express Post (depending on total order weight).

Some very light items may ship for less; calculated at checkout.

Orders ship in 1-2 business days (usually quicker!).


Sending a gift? Add a message in your cart and we'll handwrite a card for free! Whilst we don't currently offer a gift wrapping service, we take pride in every box we pack and so guarantee a great unboxing experience for the recipient :)

We don't include any paperwork with deliveries so the recipient won't see any pricing.

30-Day Easy Returns

We have a 30-day easy returns policy, which means you have 30 days after receiving your item to request a change-of-mind return. To be eligible for a return, your item must be in the same condition that you received it, unused, and in its original packaging.

It is your responsibility to get the item(s) back to us and any associated shipping fees are not refundable unless we are at fault. To begin the process, please contact us.

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Carbon-neutral shipping on all orders
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Customer Reviews

Based on 3 reviews
Julie D.
This stuff works!

Finally, something that actually works to get rid of these pasty little
bugs. Thank you💚

Christine W.
Gnats be gone

I love it, Gnats hate it.
Freedom at last from embarrassment when visitors drop by.

Anna S.
Great Product

Easy to use and works well! I've started adding a layer of this to all my new plants and haven't had any gnats since.

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    Small Business

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    Fast Dispatch

    Leaves in 1-2 business days.

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    Thoughtfully Packed

    Maximum care, minimal waste.

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