Root Cleaner - Soil Gnat, Fungus and Pathogen Killer (8 Ounce)

So this stuff does work. I gleefully watched fungus gnats fleeing for their life (and was also grossed out by how many there were) and am hoping to be able to finally eradicate those nasty boogers for good.As someone else mentioned, the instructions are weird and in two different places on the bottle. This is my simplified interpretation:-Mix one ounce (aka 2Tbsp or 6tsp) of the concentrated cleaner to one gallon of water.-Pour the mixture you just made at the base of the plant, 1c for a gallon sized plant container. Assuming that a 7-8" pot is a gallon size pot, smaller pots like 5-6" might only need more like 1/3c or 1/4c of that mixture. A 10" pot would be a 3 gallon plant container, so would need 3 cups of the mixture. And so on.**A 1 gallon nursery pot is not 1:1 volume as a 1 gallon jug for liquids, nursery pots are smaller**-Add some water to help push the mixture deeper into the soil, but not flush it out entirely.-After 15-20mins, flush it all out with water.If you follow that, it works great. If you accidentally add 1c of this concentrated stuff to 1 gallon of water, it's going to kill your plants along with the pests.That being said I have applied only one time, so far, and have already noticed a drastic reduction in fungus gnats. My plants seem fine, as well. Before this I was doing weekly hydrogen peroxide + water solution, yellow sticky traps, and even bought a Katchy. It would barely put a dent in the gnats, then they would come back full-force.Fingers crossed, but so far things are looking good!

maybe 3-4 stars as I don't know how effective it really is, as I just got it in mail and just now testing it out on many plants. I loath gnats! so I do hope after a month or so I remember to update the effectiveness of this product. until then, read directional instructions on bottle!,...and good planting.

First time using, I'm trying to follow the directions to the tee and hope it works for these gnats... nothing I tried before but this product worked. The gnats did run out of the soil I noticed, but I hope they stay out

I think this product is actually mostly soap. It doesn't have that insecticide smell at all, which is a good thing. In fact, it hardly smells at all, which is why I think it is mostly soap and the fact that it gets sudsy. I reduced the number of stars because this is not an easy product to use, especially if your soil doesn't have good drainage. In fact, I found out just out badly my potting soil drains! I suppose I should be grateful for that as I now know I need better potting soil. The soil that you have really needs to drain fairly quickly because the instructions state that after you let the product sit for 20 minutes in the soil, you need to rinse it out of the soil by letting fresh water drain out of the bottom of the pot. It sounds very simple in theory. If your potting soil is like mine (the cheap stuff), it doesn't drain good at all and I created a mess trying to get it rinsed through. In fact, I'm waiting now to see if my plants will die from the trauma of being overwatered for an extended period and root damage as I tried desperately to get it to drain. I didn't really see any gnats trying to escape as I poured it over my plants, but I had let the soil dry out quite a bit too, so I think they already escaped to find moister pastures. It has been about a week now and I see them trying to repopulate my pots as a few are now getting stuck on sticky cards.My recommendation: Make absolutely SURE that your potting soil has good drainage or you'll regret trying this product. If you flood the pot with plain water and it doesn't drain fairly quickly, change your potting soil and then use this product after you've made the switch. I can't really speak for how well it actually kills off gnats and their larvae because I made such a big mess of the whole thing.

I am so tired of fake Amazon reviews. This does NOT work on fungus gnats. Per the label directions, I diluted 1 oz per gallon of water and drenched the pots. Waited 20 minutes. Live fungus gnat larvae were still visible in the potting soil. Reapplied and waited another 20 minutes. Some dead larvae, but also some live. Feared damaging the plants with more treatments, so went ahead and rinsed as directed. (This step takes an eternity, if you have many pots.) Live fungus gnat larvae were still visible in the soil an hour later. The next day, there were adults. Repeated in 3 days with the same result. Not bothering to repeat again. Removing all soil, washing roots and pots, and then repotting in fresh soil. Incidentally, that takes less time and is cheaper.

As other reviewers have noted, it is easy to use once you figure out the less than clear instructions. It says to apply 1 cup of mixed solution (diluted as per instruction) per gallon. But in this case “gallon” is referring to size of container. If you go to the plant nursery - common sizes of plants are in 1 gallon or 2 gallon or five gallon black containers. So you would use 1 cup for a 1 gallon container, 5 cups for a five gallon plant container, etc. But houseplants are often in containers much smaller than one gallon, so you generally need to use far less than one cup (diluted at 1 oz per gallon of water, not straight from the bottle) per plant. I applied a couple of times 3 days apart to houseplants and the fungus gnats have all but disappeared.