ultrasonic repellent?

I have a bit of a gnat problem and dont want to use any sprays or stickies i was wondering if anyone has ever used an ultrasonic bug repellent in there grow room. anybody know if it repells gnats? would it plants be harmed by the ultrasonic sounds?

I tried ultrasonic bug repellent years ago in an apartment that had roaches, it didn't work. Maybe in a small grow area the outcome might be differnt? I'm wondering what it would do to spider mites.

I've been reading up on it a lil more and these devices do no good, their has been very little scientific studies and the studies there are all say its bogus! jus a scam to make money. im glad i read more i was about to buy some, so instead im gonna use apple cider vinegar and sugar mix in a bottle.. the gnats are attracted to it... theres already 4 gnats in the bottle lol hell ya!

sns209. I wouldn't get excited about 4 gnats already in the bottle. it's the larvae down in your soil/roots that is gonna be the problem.

gognats, a cedar oil based soil drench. that kills and repels gnats and a few other pests, it can be used an foliar spray also. another alternative is mosquito dunks (BT). don't fuck around when it comes to pest in your garden.

Diatomaceous earth. Spread a layer on the top of your soil (if in soil) and that will kill them off. Literally dirt cheap. The silica is good for the plant too!

cannabis love said:

Diatomaceous earth. Spread a layer on the top of your soil (if in soil) and that will kill them off. Literally dirt cheap. The silica is good for the plant too!

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yes duh i shouldve thought bout that i have pounds of it(cuz i eat it).. thanks for the remind lol