If they are fungus gnats you can control the little fukers with sticky fly paper that you hang from the ceiling,just rub a slice of orange on the paper in a few spots to lure em in
,it wont take long with 5 or 6 fly papers hanging & you'll have killed them all.
If you have crawling insects then lady bugs are the ultimate weapon,just buy a thousand of them lil suckers & poof !!,just make sure to have fans on all the lights so your lady bug friends wont want to go up that high & get fried in the lights.