StankyBeamer
Professional A$$hole
So ive been battling these gnats for some time now, had them gone for most of last year but got some in clones in the springtime, and i cannot get rid of these fuckers. Its usually not a problem because i expand my coco with boiling water and let it sit before rinsing and charging. Now that they're back they still get into unused coco after its been boiled, so thats not really helping. Ive been alternating pyrethrin and permethrin as soil drenches about a week apart, did a dunk with insecticidal soap (and barely flushed quick enough to avoid totally burnt plants), amd have sprayed neem with spreader on soil tops and plants multiple times in the past few weeks.
Before anybody chimes in with the clichés such as: youve probably got root aphids, or use a layer of sand, or the classic "gnatrol kills em dead", all these avenues have been checked.
Theres no aphids on the roots (ive disected several rootballs to find nothing but gnat larvae, no honeydew or crawlers)
They seem immune to bti (used it every watering for months without even a reduction in population) so gnatrol/dunks/microbelift arent gonna help.
Ive been using pyrethrin and permethrin (alternately of course) which seems to have slowed them down, the soap dunk also seemed to reduce the amount of flyers i saw, but no matter what i use and how many times i repeat treatment, i always manage to kick up at least one or two flyers when im watering every day.
I read a thread where someone said they put seven dust on their soil tops for a few days, then found a piece of literature from MSU that says carbaryl(Seven) or malathion could be used as soil drenches to kill larvae if the infestation is persistant. Has anybody had any experience with seven? Its not systemic, and wont be sprayed, so it ending up in the finished product isnt a problem, im just afraid to use the 45ml/gal the bottle reccomends. At this point, all the neem, soap, and pyrethroids have done more harm to my plants than the gnats so i dont wanna burn everything with another overzealous soil drench, but the only other mix rste i could find was from a forum and was 1/4 tsp per gallon which is like 98% less than the bottle reccomends.
So anyone with dosage reccomendations please dont be a lurker, speak up please and thank you.
On a side note, i got spectracide foggers to treat the whole house with after the first soil soak with Seven, does anyone know if tetramethrin or cypermethrin are effective on adults? I know spectracide concentrate used as a drench did nothing to them, and i feel like ive created a real immunity problem with the pyrethrin and permethrin
Before anybody chimes in with the clichés such as: youve probably got root aphids, or use a layer of sand, or the classic "gnatrol kills em dead", all these avenues have been checked.
Theres no aphids on the roots (ive disected several rootballs to find nothing but gnat larvae, no honeydew or crawlers)
They seem immune to bti (used it every watering for months without even a reduction in population) so gnatrol/dunks/microbelift arent gonna help.
Ive been using pyrethrin and permethrin (alternately of course) which seems to have slowed them down, the soap dunk also seemed to reduce the amount of flyers i saw, but no matter what i use and how many times i repeat treatment, i always manage to kick up at least one or two flyers when im watering every day.
I read a thread where someone said they put seven dust on their soil tops for a few days, then found a piece of literature from MSU that says carbaryl(Seven) or malathion could be used as soil drenches to kill larvae if the infestation is persistant. Has anybody had any experience with seven? Its not systemic, and wont be sprayed, so it ending up in the finished product isnt a problem, im just afraid to use the 45ml/gal the bottle reccomends. At this point, all the neem, soap, and pyrethroids have done more harm to my plants than the gnats so i dont wanna burn everything with another overzealous soil drench, but the only other mix rste i could find was from a forum and was 1/4 tsp per gallon which is like 98% less than the bottle reccomends.
So anyone with dosage reccomendations please dont be a lurker, speak up please and thank you.
On a side note, i got spectracide foggers to treat the whole house with after the first soil soak with Seven, does anyone know if tetramethrin or cypermethrin are effective on adults? I know spectracide concentrate used as a drench did nothing to them, and i feel like ive created a real immunity problem with the pyrethrin and permethrin
