Gnat control

Even if you don't see signs, use Bt-i to start... if you do see some, add some sticky traps - kill at both ends of life cycle, but when using bti from seedlings, the most you'll see is a gnat or two on rare occassion. If you see none by the end of first month, can stop using it. It's less effective reacting to a problem.. it'll take 2-3 weeks to clear an ongoing problem. This stuff comes from the store. Whether during transportation or stored outside, it's exposed at some point, gauranteed. So, everything has a risk of coming with some larvea. Organic or not is irrelevant. Organic is just a marketing term, as it's used in the gardening hobby. It's a term that's not really based on causality so much as feelings. Even the chemistry term is more of a general categorization that's quite arbitrary in nature.

Mulch.

hi Use BTI or nematodes to target the source (the larvae), and set up yellow sticky traps to catch the adults have nice day

Hi, there are different methods. Nematodes, BTI (bacteria), predatory mites, letting the soil dry more, sand or a cover layer, yellow sticky traps, H₂O₂, neem (some people find it questionable, I didn’t look into that)... and so on. I’ve had the best results with combinations. It also depends if it’s indoor or outdoor. Important is to target larvae and adults, especially if you can’t fully wipe out (and prevent New inestation) one stage. Indoor I always go a bit drier, do some defoliation, use sticky traps, nematodes and/or predatory mites. I also covered the soil before (growdiaries.com/diaries/298618-grow-journal-by-trutratri), but depending on your medium and pot this could inhibit aeration. I don’t use H₂O₂ or neem sprays anymore, if I cant use it in flower stage I need soomething else ? For me bacteria (BTI) turned out most effective overall. Works indoor and you can also use it preventively when recycling soil. Also cheaper and I dont have to make a fitting environment like for nematodes and mites.

Simple answer bti

Hello. Ground Cinnamon will kill the fungus that the gnats live on and won't hurt the plant in anyway. Sprinkle some around the top of the soil, and water in. Absolutely safe unless you use way to much. 1/2 tsp for 1 solo cup - Can use 2 tbsp. for large pots - easy pezy. Good Luck. Also... Your stuff is too wet... cut back on the watering's. Let stuff dry out between watering's.

CONTROL STARTS AT THE START OF DA GROW!!! I NEVER GET THEM AND I GROW WITH HOMEADE ORGANICS!!!! I SUGGEST DAT YOU DRY OUT OUR MEDIUM BEFORE DA START OF YOUR GROW FOR 3 WEEKS IN SOMETHING LIKE A RUBBERMAID TUB. DEN REHYDRATE IT TO 70% BEFORE USE!!! AFTER DAT DONT OVER WATER DA MEDIUM!!!! DAT WILL WORK VERY VERY GOOD IN DA FUTURE!!!!