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Yates Gnat Barrier for Fungus Gnats

$24.99 NZD

*Please note a limit of 2 bags per order due to shipping weight*

You can order more than 2 bags by placing a separate order for the extras. If ordering Gnat Barrier with a 5 litre potting mix, or with Dolomite Lime, there's a limit of 1 bag of Gnat Barrier due to combined weight. 

 What is Gnat Barrier? 

Yates Gnat Barrier comes in a 4.5 litre bag, and creates an abrasive, physical layer that prevents annoying Fungus Gnats from landing and laying eggs in your indoor pot plants. Gnat Barrier is natural and non-toxic, made from abrasive pumice granules, making it a safer and more effective alternative to using diatomaceous earth.

 How do you use Gnat Barrier? 

Simply sprinkle a layer of the granules over the surface of your pots to create a barrier against Fungus Gnats. Because Gnat Barrier is made of pumice, not diatomaceous earth, you can water through Gnat Barrier with no need to reapply after every watering. 

Check your layer is at least 3cms deep and covering the surface of the potting mix completely. Water gently straight after applying to settle the granules in and check you've got no holes. Over time the granules will slowly settle, so top up when the layer becomes less than 3cms deep.

For even faster results to get rid of Fungus Gnats, water with Mozzie Bits to kill the larvae, and add a Sticky Trap on top of the granules to trap adult flying gnats. Keep using Gnat Barrier to stop them coming back. 

 How many pots will 1 bag of Gnat Barrier cover? 

Based on the recommended 3cm deep covering, one 4.5 litre bag of Yates Gnat Barrier covers about 10 x 13cm pots (more if smaller pots, fewer if larger), so it does depend on your pot size. For the fastest results, use Gnat Barrier along with Mozzie Bits and Sticky Traps (linked above). 

 What's wrong with diatomaceous earth? 

Diatomaceous Earth isn't earth at all, but actually fossilized remains of tiny, aquatic organisms like plankton. It's often recommended for the same purpose at Gnat Barrier, to create a barrier to deter Fungus Gnats.

However diatomaceous earth is a little controversial when used inside the home, or for indoor plants. Diatomaceous earth (DE) is toxic to mammals unless you find a food grade source. Not great for kids or pets. DE is fine, glass like particles. When dry, which DE needs to be to work, it is like a fluffy powder that easily becomes airborne.

Aside from the health risks, DE doesn't work when wet, so needs to be reapplied every time you water. If you do use diatomaceous earth, keep doors and windows closed so it doesn't become airborne when dry, reapply after watering, and keep pets and kids well away. 

Gnat Barrier, made of natural, non-toxic pumice granules, is a safer alternative that's also more effective for use indoors.


Shipping and Delivery FAQ's


Flat rate shipping is $5.90 nationwide (or $9.50 for rural). Order as many products as you like without paying anything extra for shipping. The only exceptions are plants and fragile or oversize products (like handmade pottery and coffee table books), which have their own rates. 

For $2 you can upgrade to signature required. Well worth it for anything valuable or limited edition that can't be replaced. Choosing signature required gives both of us the ability to claim if anything goes wrong with the courier. Signature required is flat rate $7.90 nationwide (or $12.50 for rural).


Everything showing in stock online, is in stock right here, right now, in Auckland NZ, ready to ship. No drop shipping from other countries. No delays.



Orders ship every week-day, Monday to Friday (except plants which only ship Mondays and Tuesdays). For everything else, order before 7pm Sunday through Thursday, and your order will normally be packed and on the courier the next morning. Zoom zoom! We do ship on Saturdays also when we can, however can't always guarantee a Friday order will ship on a Saturday.



Normal delivery is 1 to 2 working days. Some regions can take longer, 3 to 4 working days is normally the longest wait, depending on where you're based (I'm based in Auckland). Keep in mind covid and extreme weather can both cause delays.

More about shipping and delivery > 



"Anna was brilliant. Order placed and sent the next day. Received in awesome packaging. Couldn’t ask for more... will definitely use you again and again and again. Highly recommend." Scott Guthrie 

"I can’t recommend love that leaf highly enough. I’ve bought a couple of times so far and on both occasions Anna has been more helpful than I could possibly wish for. 5 stars! Don’t hesitate to order from Love That Leaf. Excellent service and super fast delivery." Rob Gordon

Why choose to buy from Love That Leaf?


When you buy from me you're supporting a local, small, family business. Love That Leaf is a registered NZ business, based in Auckland. 


You'll also get your goodies super fast. Everything showing in stock on the website is right here, in stock, ready to ship to you. I ship daily, Monday to Friday. If you order by 8pm Sunday through Thursday, your order will be normally be on the courier at 8am the next morning. Zoom zoom!


I stand by everything I sell and will always help put right anything that goes wrong. When you choose to buy from a registered NZ business (like me), you're also covered by the Consumer Guarantees Act, unlike overseas purchases or private sales, where you can end up stuck with no rights if anything arrives damaged or stops working.


I won't go AWOL on you. I'm here for support and advice anytime.  I'm very happy to help, even if you haven't bought from me yet. A lot of lovely people helped me along my plant journey, and I want to pay it forward. Please don't hesitate to ask for help. 


"Super impressed with this business. Something that is lost nowadays, is customer service. This however is not the case with Anna from “Love that Leaf”. Very happy with my purchase, very happy with the product information provided and very happy with the quick shipping and great packaging. Thanks!" Melayna Anderson

"By far the best customer care I've had in a long time. Website is such a wealth of information and the email with instructions for use after my purchase was fantastic. The pipette for measuring the correct amount was such a great inclusion, and the personalised message on the package was very cool. Definitely my go to shop for plant supplies now. Thanks Love That Leaf! A+++" Karyn Wilson