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Mozzie Bits - Mosquito Bits for Fungus Gnats

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*Supplier temporarily sold out in New Zealand. Expected back in stock early to mid April. Get on the waiting list above and I'll let you know as soon as it's back in stock*


Oh. My. Goodness. I HATE Fungus Gnats. And that's from someone who dislikes using the word hate. And I've put it in capitals. Yep. That much.  

When I first started collecting plants I was quickly over-run by Fungus Gnats. And because they love carbon dioxide, the only thing more appealing to them than the moist soil of my plants, was the CO2 in my breath, so you always know when you have Fungus Gnats. Even one or two and they'll quite literally be all up in your face. Plus I couldn't leave a cup of tea uncovered without finding little unwanted floaters, and I really love my tea. They had to go.

If you get on top of them while the infestation is small, the good news is they are more annoying than harmful. They should leave your plant's roots alone. With the number of plants I had, they were having a ball and inviting all their mates to the party, so I tried almost every remedy to kill them. One day I'll write an article on everything I tried, as most helped reduce but not eradicate. What DID finally work for me, was the combo of Mozzie Bits and Sticky Traps. 

Mozzie Bits kill the larvae. Sticky Traps kill the breeding adults. No larvae = no new adults. No adults = no new larvae. Used together you can break the cycle, which is the key for saying bye bye to Fungus Gnats once and for all. 

How do Mozzie Bits work?

Mosquito bits or 'Mozzie Bits' target the larval stage of the Fungus Gnat lifecycle. It's those larvae that hatch and eat yummy wet and rotting organic matter in your soil, including yummy roots if you have a big infestation. The adults that they hatch into are annoying, but it's the larvae that can do the munching.

The larvae are killed by a microbial insecticide called BTI. A naturally occurring bacterium that is deadly to mosquito larvae and fungus gnat larvae. BTI is short for Bacillus thuringiensis israelensis. That's what's in Mozzie Bits. Although deadly to fungus gnat larvae, it's harmless to other living things. BTI is nature’s way of keeping fungus gnat and mosquito populations under control.

How do you use Mozzie Bits to kill Fungus Gnats?

The box gives you the directions for larger areas of water based on surface area, but used for treating indoor plants, I use the same method plant YouTubers have nicknamed 'Mozzie Tea'.

For indoor plants, you can use a mixture of 4 tablespoons of Mozzie Bits per 4.5 litres of water. I use hot water (not boiling), and let the granules soak for 30 minutes so the BTI infuses into the water. I scoop out the used granules, give it a bit of a shake, and top water as usual. Scooping out the granules is probably the most annoying part, so you can also tip everything in to other containers through a sieve, or the easiest way is just to pop them in a mesh bag, no sieve, scooping or extra containers needed.

I've also seen people put the granules in a mesh bag or similar to soak which makes it easier to remove the used granules. One 200gram Mozzie Bits works out to just over 33 tablespoons, (a tablespoon averages 6gms of granules). One pack should make over 37 litres of 'Mozzie Tea'.

The cooler the water, the longer the mixture needs to infuse. I've heard of some leaving it in cold water to soak overnight but I'd keep to a 30 to 60 minute soak max, as the bacteria become inactive over time. You do have to wait for the water to cool before you water, so another option is a warm water soak for one hour instead. Once mixed, use fresh as the microbial activity breaks down in 1 to 2 days

How often do you need to repeat the treatment to kill Fungus Gnats?

The Fungus Gnat lifecycle averages 17 days in good conditions (when warm and moist), with most of that time spent in the soil, not as adults. You'll need to give them a good top water drench with Mozzie Tea at least every fortnight (ideally more often), every time you water, until eliminated. You can bottom water if you prefer.

Because they love moist soil, you don't want to over-water or may end up with root rot instead, so water normally, and use drenches in conjunction with adult gnat control using Sticky Traps 
to reduce the adult population so they don't lay more eggs and start the cycle all over again. 

I continued treating for 2 months, and always keep some on hand as bringing in a new plant, or using potting soil that's been stored outdoors, can also come with Fungus Gnats. Even shifting plants outdoors to water, and back in again can bring gnats inside again too. When you get a new plant, always isolate for at least 2 weeks as Fungus Gnats (and most pests), will make themselves known in that time. Much easier to treat one plant than your entire jungle! Store soil indoors also.

Is Mozzie Bits safe?

Yep! This is pest control using nature. Mozzie Bits won't harm animals, birds, bees, livestock, fish, vegetation or us. It can be safely used in bird baths, indoor and outdoor potted plants, rain barrels and roof gutters, water troughs, vases, ponds, fountains and more. Just don't put it in your treated drinking water supply.

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