Same with fungus gnats.
And it's the larvae that do the damage, yah?
Here's a tip, both kine hunt by scent.
Grab a couple dryer sheets from the laundry room, tear them half way through an use them to cover the soil surface. Like so.
I use Kirkland unscented. They do not affect the taste, or scent, of the buds.
They work two ways. The wax surfactants actively repel RA flyers and FGs. The sheets also act as a physical barrier to both egg laying, and flyers hatching.
Been using them for 12 years now.
Got 0 FGs or RAs, or Thrips, growing outdoors, in Hawaii.
Change them once per month to refresh the repellent.
By the way, they also repel German cockroaches. We used to pay an exterminator to just control those.
Now, I have none to control.
Just toss a couple dryer sheets under the sink and change them out monthly.
I know it sounds too good and cheap to be true. But it's easy to try and you will be very pleased.
Aloha,
Weeze