Brett D.
★★★★★VerifiedMay 4, 2026
This is a wonderful addition to prevent those pesky Gnats
Steve V.
★★★★★VerifiedApr 10, 2026
So far so good. I applied two treatments to my new soil and the plants in veg. The fungus gnats can't stand thus stuff and my plants haven't had any bad reaction to it!
Ken R.
★★★★★VerifiedApr 9, 2026
Now, No more of fungus gnats !
Denise S.
★★★★★VerifiedApr 9, 2026
I started an indoor veggie “garden with soil and grow lights. And it not only got infested by some of the compost I used, but I had several houseplants already that were little gnat factories! I’d learned about Mosquito Bits just recently and had been trying them—what a pain! Messy, stinky, inconvenient and only partially effective after 3 weeks. I went searching again and discovered other products including WDG3000. Hesitated due to the price, but was impressed by the reviews and so tired of the battle, so I splurged. SO worth it! Applied 3 times at 5g per gallon in the first week and have only seen 1 or 2 straggler adult fungus gnats in my whole house! I’ll back off now to weekly or less and hopefully that will prevent return. Only little issue was that some of my plants have been overwatered due to the drenching method, but they should recover.
Robert F.
★★★★★VerifiedApr 5, 2026
Been using this product for over a year now. Fungus gnats were a problem before that took constant and mitigation with varying degrees of success. I haven’t seen a gnat in a very long time. I sprinkle a little on top of the soil usually after I’ve amended. Just keep using it and you wont have gnats anymore.
Eric J.
★★★★★VerifiedFeb 23, 2026
Been battling fungus gnats for years and loosing. Tried "mosquito bits" at varying strengths with some success. I didn't believe that this product would produce better results than my 10x MB previous attempts. Good news, I was wrong. This product is Works. Didn't see results until the 3rd application, so be patient.
Heather E.
★★★★★VerifiedFeb 16, 2026
We had a fungus gnat problem of epic proportions in my office. Nothing else worked. Use it just like the directions say, and be patient, as it takes a few weeks to fully work. My plants are super healthy looking and the BTI didn't affect them negatively. I would tell you not to hesitate and buy it.
Joel
★★★★★Feb 7, 2026
Worked as intended and fast. Bye bye fly
Eric C.
★★★★★VerifiedFeb 5, 2026
After one application, seeing a huge drop in the gnat population. First run in this reamended soil, so i expected theyd pop up, but this really let me get ahead of it early on
Jared U.
★★★★★VerifiedJan 31, 2026
I used compost that I stored outside and I ended up with a full infestation in my 5x5. I tried the bits route and it didn’t work. I applied WDG with every watering and I’m back to healthy soil. I apply with every watering now. It’s reassuring to know I don’t have to deal with gnats anymore. Everything from BAS is gold
Brandon S.
★★★★★VerifiedJan 20, 2026
This product worked perfectly and it saved my second harvest I lost one due to fungal gnats and this worked just as advertised and perfectly thank you
Orion A.
★★★★★VerifiedJan 9, 2026
First thing I've found that actually works. Thank you.
Brittain W.
★★★★★VerifiedJan 1, 2026
Just get some. If you use compost, you need it.
Ryan A.
★★★★★VerifiedDec 24, 2025
We'll see how well it works. But this company is known for putting out top quality material so I expect air work pretty good.
Dione
★★★★★Dec 22, 2025
This has been my favorite addition so far…. Gnats be gone!
Ben
★★★★★VerifiedDec 21, 2025
Wdg3000 is the real deal! Just top dressed my plants and noticed tiny white worms (fungus gnat larvae) in my soil. One light soil drench with wdg3000 and all the larvae was dead without harming my beneficial critters. I've never had a fungus gnat and I don't think I ever will with this product in my garden
Jeff W.
★★★★★VerifiedDec 18, 2025
I’ve never had a huge gnat problem but whatever gnats I might have now packed there bags.
Karen M.
★★★★★VerifiedDec 16, 2025
Seems we finally have gotten rid of the fungus gnats with BuildASoil's Fungus Gnat Eliminator! Thank you BuildASoil!
COREY
★★★★★Nov 6, 2025
Haven't seen a single gnat on the traps since using this stuff
Don N.
★★★★★VerifiedOct 16, 2025
Used as suggested. Was very helpful in resolving my fungus gnat issues.
Don N.
★★★★★VerifiedOct 9, 2025
We suffer an abundance of fungus gnats here in our part of Alaska. Used as suggested. Worked very well. I will continue to order more.
Harding G.
★★★★★VerifiedAug 17, 2025
Delivered on time and correct! Ball in my court to become a good Steward
Brian V.
★★★★★VerifiedAug 9, 2025
I used this on a large 30 gallon fabric pot which had a major fungus gnat infestation. (Gnats would blacken a 6"x 8" yellow sticky card in just a few days.) Two applications of BTI and a few weeks later the gnats have all but disappeared.
KMJ
★★★★★VerifiedJul 28, 2025
Worked well in a 3-Gal pot with persistent gnats. Took two applications, I mixed about 1/4 tsp into 1.5L of water two different times and reduced the gnat activity to zero. I keep adding sticky traps to be sure, and they've stopped getting adults consistently. Thanks!
Philip S.
★★★★★VerifiedJul 25, 2025
Just a few applications and my houseplants are free of those pesky little gnats. I’ve used competing products in the past, which required much longer treatment.
Michael T.
★★★★★VerifiedJul 11, 2025
Wow first application 7.5 grams killed every single one of them and kept them away to a couple compared to full blown infestation. Was skeptical at first with the warning information but I'll use this in the future didn't realize how much they effect plants health once ghats died off plants became more luscious and green
Mark
★★★★★VerifiedJul 10, 2025
At the start of a grow, I treat the water that I'm initially going to use to wet the soil with this WDG and I do not get a single gnat from seedling through harvest day. The cost seems high until you use it and realize how effective it is and how little product it takes to use it proactively.
Justin D.
★★★★★Jul 3, 2025
I’ve went down a whole rabbit hole of other products that were cheaper alternatives to this because the pricing on this kinda crazy but it’s worth the additional money being that this product is so high in BTI and not just 98% filler like mosquito bit or the dunks. I also used beneficial nematodes for about 2 weeks with no luck or change in gnat populations. But I have seen big results in just 2 waterings. This would be my first choice for treating fungus gnats in the future. Paired with yellow sticky traps and some dr Bronners peppermint soap diluted for the flyers
Wallace W.
★★★★★VerifiedJun 10, 2025
I only had a light infestation. But after the first use, there was an undeniable decrease in the fungus gnat population. I’ll hit them again next week. I’m 100% satisfied so far!
Ryan
★★★★★May 24, 2025
Gnats are gone! This stuff is the truth. I was using microbelift before i grabbed this and it just wasn't strong enough. Dont waste your money on weak BTI products, just grab some WDG3000.
Jerome A.
★★★★★VerifiedMay 17, 2025
Gnats eliminated in 2 waterings.
George M.
★★★★★VerifiedMay 5, 2025
Definitely WORKS!!!!! Its incredible and easy to use!! WORTH EVERY PENNY!!!
Evann J.
★★★★★VerifiedApr 7, 2025
The name tells you all. Awsome product had an infestation of fungus Nats and took 2 weeks and can barley tell I even had them. Except for the ones that got stuck to the leafs.
Steve C.
★★★★★VerifiedApr 3, 2025
This product seems to be working 💪 with power. Keeping those Nats at bay. I would totally recommend this product.
David D.
★★★★★VerifiedMar 28, 2025
I grow in coco with a drip system in a 3x3 tent in the garage. Started to have a problem with fungus gnats only recently. Adding WDG3000 to my water got rid of all of them in a couple of days. I imagine this bag will last me years.
Chris C.
★★★★★VerifiedMar 27, 2025
I had a few gnats. Now I got no gnats.
Bryan P.
★★★★★VerifiedMar 26, 2025
I went from catching hundreds of gnats on sticky traps a day to none in 2 treatments
Richard L S.
★★★★★VerifiedMar 25, 2025
I mixed 5 teaspoons in 2 gallon sprayer with Q powder. Sprayed out 1 quart per 15 gal. container three times in one week. 10 year problem solved. I will continue once a week with 1 teaspoon per gal.
Winks
★★★★★VerifiedMar 24, 2025
Finished run and had gnats. Started watering this in and misting em5 or DR Zyme for the flyers and noticed decrease right away.
Sean A.
★★★★★VerifiedMar 18, 2025
I like the concentration and solubility of this product.
Derrick R.
★★★★★VerifiedMar 11, 2025
Was having a issue with gnats and this helped solve the problem so much. When putting a growing kit together this is a product I recommend
Derrick R.
★★★★★Mar 11, 2025
Was having a problem with gnats and this product helped clear them up and saved my plants.
Pat G.
★★★★★VerifiedMar 7, 2025
Did not use on initial watering. 6 weeks in , the gnats were thick in a few of my EBs. Few weeks of heavy treatment and under control again! Great product
Brendan
★★★★★VerifiedMar 6, 2025
Was having a problem with fungus gnats so I started watering with some of this in it each time and they were all gone in about a week or so.
Steven Y.
★★★★★VerifiedMar 4, 2025
This is what I would call part of my backup plan.
Dan
★★★★★VerifiedFeb 23, 2025
I was struggling with a fungus gnat infestation and mosquito bits weren't getting me anywhere. After a thorough cleaning and a few applications at 5g/gal they seem to be completely gone. This helped me rid the gnats just in the nick of time! Thank you! Highly recommend.
Am2PmRN
★★★★★VerifiedFeb 21, 2025
Recently used this for the 1st time but used it as a preventative step since I always have gnats at the seedling stage through early veg despite using D. Earth and yellow sticky traps. I didn't have ANY gnats this time which says it all!
SEBASTIAN K.
★★★★★VerifiedFeb 18, 2025
the easiest way to get rid of fungus gnats!
Carno
★★★★★VerifiedFeb 15, 2025
I use this during every soil inoculation and weekly at the lowest dosage. Works great
Tyler
★★★★★Feb 10, 2025
Gnat war is officially over 5 stars