{"title":"Fungus Gnat Control","description":"\u003cdiv class=\"gm-edt-prose\"\u003e\n\u003cp class=\"lede\"\u003eSwatting adult fungus gnats never works — the damage is done by larvae in the media. Fungus gnat biological control kills them at the source, so the next generation never takes off.\u003c\/p\u003e\n\u003cp\u003eFungus gnat larvae chew roots and root hairs of seedlings and clones and spread root-rot pathogens, all while hidden in wet media. \u003cstrong\u003eFungus gnat biological control\u003c\/strong\u003e pairs \u003cstrong\u003enematodes for fungus gnats\u003c\/strong\u003e with soil predators to break the cycle, residue-free.\u003c\/p\u003e\n\u003ch2\u003eWhy choose biological fungus gnat control\u003c\/h2\u003e\n\u003cp\u003eAdult sprays barely dent populations because the damaging larvae live in the media. Soil biologicals attack those larvae directly, leave no residue, avoid resistance, and protect the most vulnerable plants — seedlings, plugs, and clones.\u003c\/p\u003e\n\u003ch2\u003eHow to build your program\u003c\/h2\u003e\n\u003cp\u003eDrench Steinernema feltiae nematodes to infect larvae, and establish Stratiolaelaps mites and Dalotia rove beetles on the surface for continuous control. Let the top of the media dry between waterings and track adults with yellow sticky cards.\u003c\/p\u003e\n\u003ch2\u003eWhat's in this collection\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/steinernema-feltiae-nematodes-50250-million\"\u003eNEMAforce SF\u003c\/a\u003e\u003c\/strong\u003e (Steinernema feltiae) — nematode that kills fungus gnat larvae in the media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/stratiolaelaps-scimitus-soil-dwelling-predatory-mites\"\u003eSTRATIOforce\u003c\/a\u003e\u003c\/strong\u003e — predatory soil mite.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/atheta-coriaria-rove-beetle-adults\"\u003eDALOTIAforce\u003c\/a\u003e\u003c\/strong\u003e — rove beetle for surface patrol.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eDo nematodes kill fungus gnats?\u003c\/h3\u003e\n\u003cp\u003eYes — Steinernema feltiae nematodes infect and kill fungus gnat larvae in the growing media, cutting off the next generation.\u003c\/p\u003e\n\u003ch3\u003eHow do I get rid of fungus gnats fast?\u003c\/h3\u003e\n\u003cp\u003eCombine surface drying and sticky-card monitoring with nematode drenches and soil predators for quick, lasting control.\u003c\/p\u003e\n\u003ch3\u003eWhat causes fungus gnats?\u003c\/h3\u003e\n\u003cp\u003eOverly wet media, algae, and rich organic matter — the perfect nursery for fungus gnat larvae.\u003c\/p\u003e\n\u003ch3\u003eWill fungus gnats go away on their own?\u003c\/h3\u003e\n\u003cp\u003eRarely in moist indoor conditions — without drying and biologicals they keep breeding in the media.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca href=\"#\" class=\"gm-edt-totop\" aria-label=\"Back to top\" title=\"Back to top\"\u003e↑\u003c\/a\u003e","products":[{"product_id":"atheta-coriaria-rove-beetle-adults","title":"DALOTIAforce™ (500\/ 1,000\/ 3,000\/ 5,000)","description":"\u003cdiv class=\"gm-content-products\"\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp style=\"text-align: left;\"\u003eDALOTIAforce™ is the predatory rove beetle \u003cem\u003eDalotia coriaria\u003c\/em\u003e (=\u003cem\u003eAtheta coriaria\u003c\/em\u003e), which lives mostly in the top half-inch of soil and media and clears soil-stage pests. Both the adults and larvae hunt fungus gnats, shore flies, and the soil-pupating stages of certain thrips. The very mobile adults crawl and fly from pot to pot, eating pests along the way, and they stay effective even in soilless hydroponic greenhouses. Use it in ornamentals, hemp\/cannabis, covered crops, and mushrooms.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it targets\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003eFungus Gnats\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eShore Flies\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eCertain thrips species that pupate in soil or on the ground\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCrops it supports\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003eOrnamentals, hemp\/cannabis, covered crops, and mushrooms — in greenhouses, indoor facilities, fields, and gardens.\u003c\/p\u003e\n\n\u003ch3\u003eHow Dalotia coriaria controls soil pests\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003eThe adult beetles are highly mobile, crawling or flying from pot to pot and from one area of the greenhouse to another, eating pests all along the way. Because they hunt in the top layer of soil and media where fungus gnat and shore fly larvae and soil-pupating thrips develop, they remain effective even in hydroponic greenhouses with no soil.\u003c\/p\u003e\n\n\u003ch2\u003eRelease Rates\u003c\/h2\u003e\n\u003cdiv class=\"gm-table-wrap\"\u003e\n\u003ctable class=\"gm-release-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eClassification\u003c\/th\u003e\n\u003cth\u003eRelease Information\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrevention or Light Infestations\u003c\/td\u003e\n\u003ctd\u003e0.2 per sq. ft. Calculate only the soil\/media surface area, since that is where they live. If the crop is transplanted, release again at half the rate.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHot Spots\u003c\/td\u003e\n\u003ctd\u003eUp to 1 per sq. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eRelease Instructions\u003c\/h2\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eRelease timing:\u003c\/strong\u003e It is best to release these beetles at sundown. Water the media no sooner than ten minutes before releasing, and wait a couple of hours before watering again after release.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eFrom a bottle:\u003c\/strong\u003e Gently rotate the shaker tube to distribute the beetles evenly within the carrier, then open the bottle in the crop and gently tap the contents out throughout the target area.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eFrom a bulk bag:\u003c\/strong\u003e Open the bag in the crop area and use the included scoop to distribute the beetles throughout the target area.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eWhere to release:\u003c\/strong\u003e They can also be released onto dirt or gravel floors, greenhouse weeds, under benches and ground covers, and anywhere fungus gnat or shore fly larvae, or thrips pupae and pre-pupae, may develop. Leave the bottle or bag in the treatment area for 24 hours so all beetles have exited.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eStorage:\u003c\/strong\u003e Do not store the beetles for more than two days. Hold at 45–55°F in high humidity, keeping the bottle or bag on its side to give the beetles more surface area.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eMonitoring:\u003c\/strong\u003e They are primarily nocturnal but can sometimes be seen during the day, often on the soil surface, on rockwool, or climbing the facility’s walls. High populations can be counted on sticky cards. The potato test also works: place a slice of potato in the soil to attract both fungus gnat larvae and their predators, and Dalotia can often be found near it after a few days.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eAdvisories:\u003c\/strong\u003e While Dalotia can and should be used in most hemp\/cannabis grows, overpopulation can lead the beetles to climb the plants and get stuck to the buds in flower — one of the few cases where there can be too many biocontrol agents. Do not exceed the recommended rate in hemp\/cannabis, and keep a close eye on the population.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Beneficial-Insectary","offers":[{"title":"Bottle of 500","offer_id":46950176587932,"sku":"DC5","price":69.95,"currency_code":"USD","in_stock":true},{"title":"Bottle of 1,000","offer_id":46950176620700,"sku":"DC10","price":104.95,"currency_code":"USD","in_stock":true},{"title":"Bottle of 1,000- No Vermiculite","offer_id":46950176653468,"sku":"DC1N","price":104.95,"currency_code":"USD","in_stock":true},{"title":"Bucket of 3,000","offer_id":46950176686236,"sku":"DCBK","price":241.95,"currency_code":"USD","in_stock":true},{"title":"Bucket of 3,000- No Vermiculite","offer_id":46950176719004,"sku":"DC3N","price":241.95,"currency_code":"USD","in_stock":true},{"title":"Bucket of 5,000","offer_id":46950176751772,"sku":"DC5K","price":381.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/0403\/6764\/files\/DALOTIAforce_500__1_000__3_000__5_000_bottle_of_500.webp?v=1779304037"},{"product_id":"steinernema-feltiae-nematodes-50250-million","title":"NEMAforce™ SF – (50\/250 million)","description":"\u003cdiv class=\"gm-content-products\"\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp style=\"text-align: left;\"\u003eNEMAforce™ SF is the beneficial nematode \u003cem\u003eSteinernema feltiae\u003c\/em\u003e, an intermediate forager that prefers to live 1–2 inches below the media surface and uses a mix of “cruising” and “ambush” hunting. It is the go-to nematode for fungus gnats and a useful tool against soil-stage thrips. The microscopic nematodes are harmless to people, pets, and plants, and fit cleanly into greenhouse, cannabis, and nursery programs.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it targets\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003eFungus Gnat larvae\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eShore Fly larvae\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eMushroom Fly larvae\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eWestern Flower Thrips, Onion Thrips, and other thrips (adults, larvae, and pupae)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCrops it supports\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003eOrnamentals, hemp\/cannabis, vegetables, mushrooms, soft fruits, and tree nurseries — in greenhouses, indoor facilities, fields, and gardens.\u003c\/p\u003e\n\n\u003ch3\u003eHow the nematodes work\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003eInfective juvenile nematodes penetrate the host through its natural openings. Once inside the body cavity, they release a symbiotic bacterium that kills the host insect within 24–48 hours. The nematodes grow and multiply inside the dead host, and a new generation of infective juveniles then leaves it in search of more pests.\u003c\/p\u003e\n\n\u003ch2\u003eRelease Rates\u003c\/h2\u003e\n\u003cdiv class=\"gm-table-wrap\"\u003e\n\u003ctable class=\"gm-release-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eUse \/ Interval\u003c\/th\u003e\n\u003cth\u003eRate\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil or growing media — every 2–3 weeks\u003c\/td\u003e\n\u003ctd\u003e50 million per 1,100 ft² (250 million per 5,500 ft²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil or growing media — every 4–6 weeks\u003c\/td\u003e\n\u003ctd\u003e50 million per 550 ft² (250 million per 2,750 ft²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: left;\"\u003eApply in 30–50 gallons of water per 1,000 ft² (115–190 L per 100 m²). Always follow the product label for your crop and target pest.\u003c\/p\u003e\n\n\u003ch2\u003eApplication \u0026amp; Storage\u003c\/h2\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e NEMAforce™ SF can be applied with standard spray equipment, including tank sprayers, backpack sprayers, and irrigation injection systems — remove any filters first. Moisten the media to about 75% capacity, fill the spray vessel with half the required cool, clean water, start agitation, add the nematode trays, then continue agitating while filling to the final volume. Use enough total spray volume to carry the nematodes 1–2 inches below the surface where they live.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eStorage \u0026amp; disposal:\u003c\/strong\u003e On receipt, remove the product from the shipping packaging and use it immediately, or store it in a refrigerator at 41°F (5°C) — do not freeze. Ensure good air circulation around each tray, and do not use the product past its expiration date or if it was stored incorrectly. Dispose of product and packaging in accordance with federal and local regulations.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Beneficial-Insectary","offers":[{"title":"50 million","offer_id":46964902822044,"sku":"F50","price":49.95,"currency_code":"USD","in_stock":true},{"title":"250 million","offer_id":46964902854812,"sku":"F250","price":117.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/0403\/6764\/files\/NEMAforce_SF_50_250_million_50_mill.webp?v=1779320082"},{"product_id":"stratiolaelaps-scimitus-soil-dwelling-predatory-mites","title":"STRATIOforce™ – soil-dwelling predatory mites (12,500\/ 25,000\/ 125,000)","description":"\u003cdiv class=\"gm-content-products\"\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp style=\"text-align: left;\"\u003eSTRATIOforce™ is the soil-dwelling predatory mite \u003cem\u003eStratiolaelaps scimitus\u003c\/em\u003e, used to prevent, control, and manage fungus gnats and the soil-pupating stages of certain thrips. It lives and hunts in the top layer of soil and media, cleaning up pests before they emerge as adults. An underrated benefit is its appetite for thrips pupae — using \u003cem\u003eS. scimitus\u003c\/em\u003e alone has been shown to cut western flower thrips populations by around 43%. Use it in vegetable, soft fruit, and ornamental crops, and hemp\/cannabis.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it targets\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003eFungus Gnat spp.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eThrips spp. (soil-pupating stages)\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eSome Shore Fly spp.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eSpringtails and other soil pests\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCrops it supports\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003eVegetable crops, soft fruits, ornamental crops, and hemp\/cannabis — in greenhouses, indoor facilities, fields, and gardens.\u003c\/p\u003e\n\n\u003ch3\u003eHow Stratiolaelaps scimitus controls soil pests\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003eThese mites live in the top half-inch of soil and media, where fungus gnat larvae and thrips pupae and pre-pupae develop, and feed on them directly. Their affinity for thrips pupae makes them a valuable part of a layered thrips program, working below the canopy while foliar predators work above it.\u003c\/p\u003e\n\n\u003ch2\u003eRelease Rates\u003c\/h2\u003e\n\u003cdiv class=\"gm-table-wrap\"\u003e\n\u003ctable class=\"gm-release-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eClassification\u003c\/th\u003e\n\u003cth\u003eRelease Information\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreventative\u003c\/td\u003e\n\u003ctd\u003e10 per sq. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWith existing pest populations\u003c\/td\u003e\n\u003ctd\u003e30 per sq. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: left;\"\u003eFriable floors, potting mix, and other surfaces should be treated as well — not just the planting media.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eCannabis Alert:\u003c\/strong\u003e Release rate suggestions on these pages are usually not sufficient for cannabis growers. For cannabis release rates, contact us.\u003c\/p\u003e\n\n\u003ch2\u003eRelease Instructions\u003c\/h2\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eFrom a bottle:\u003c\/strong\u003e Gently rotate the bottle to distribute the mites evenly within the carrier. Unscrew the lid, remove the filter paper, put the lid back on, and tap the mites out of the bottle evenly onto the soil. Concentrate the bulk at release points near the most heavily infested or active breeding areas. Leave the empty bottle, cap removed, in the treatment area for 24 hours so all mites can exit.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eFrom a bag:\u003c\/strong\u003e Gently rotate the bag to distribute the mites within the carrier, then open it at the seal and sprinkle the contents evenly onto slightly damp growing media, soil, or ground cover using the dispensing scoop. Use a higher concentration in hot spots. These mites should also be released onto dirt and gravel floors, around greenhouse weeds, and under benches and ground covers — anywhere fungus gnat larvae and pupae or thrips pupae and pre-pupae may develop.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eStorage:\u003c\/strong\u003e The product can be stored at 50–60°F for about two days. The bottles and bags ship with a food source; once it runs out the mites will start attacking each other, so release promptly. Store the bottles on their side with the filter paper up to give the mites more surface area.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eMonitoring:\u003c\/strong\u003e The potato test works well — place a slice of potato on the soil to attract fungus gnat larvae and their predators, and check it after a few days.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Beneficial-Insectary","offers":[{"title":"12,500 - 16oz Bottle in Peat Moss\/Vermiculite","offer_id":46964903215260,"sku":"SS12","price":24.95,"currency_code":"USD","in_stock":true},{"title":"25,000 - 1 liter Bottle in Peat Moss\/Vermiculite","offer_id":46964903248028,"sku":"SS25","price":35.95,"currency_code":"USD","in_stock":true},{"title":"25,000 - 1 liter Bottle in Peat Moss Only","offer_id":46964903280796,"sku":"SSN","price":35.95,"currency_code":"USD","in_stock":true},{"title":"125,000 - 5 liter Bucket in Peat Moss\/Vermiculite","offer_id":46964903313564,"sku":"SSBK","price":166.95,"currency_code":"USD","in_stock":true},{"title":"125,000 - 5 liter Bucket in Peat Moss Only","offer_id":46964903346332,"sku":"SSGN","price":166.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/0403\/6764\/files\/STRATIOforce_soil-dwelling_predatory_mites_12_500__25_000__125_000_12500_16oz_Bottle_in_Peat_Moss_Vermiculite.webp?v=1779321102"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/0403\/6764\/collections\/Fungus_Gnat_Control_Collection.webp?v=1782260596","url":"https:\/\/greenmethods.com\/collections\/fungus-gnat-control.oembed","provider":"Green Methods","version":"1.0","type":"link"}