Yeah, i'm just a micro-grower so if you have a big op then maybe this won't hold true but every time i've had a gnat infestation i've only needed the yellow sticky tape traps to get rid of them.
The thing is that thier life-cycle is short, 5 or 6 days I think, and only the adults lay eggs, that would be the flyers, so it might take a week or more but eventually, all the eggs hatch, become larvae and then flyers where they will be trapped before they are able to lay more eggs.
Anyway, I always have yellow sticky tape traps hangin' around and the minute I see a single gnat I hang them up.
Good luck, SOG
The thing is that thier life-cycle is short, 5 or 6 days I think, and only the adults lay eggs, that would be the flyers, so it might take a week or more but eventually, all the eggs hatch, become larvae and then flyers where they will be trapped before they are able to lay more eggs.
Anyway, I always have yellow sticky tape traps hangin' around and the minute I see a single gnat I hang them up.
Good luck, SOG