I'm guessing you're talking about little black bugs - weevils. The less a grain is messed with the greater the chance of finding them ... whole wheat is more likely than unbleached, which is more likely than bleached (all purpose, cake, Bisquick, etc.). Corn meal is more likely than masa harnia. Yep - they are prepackaged with flour - straight from the field, thru the mill, and into the bag. Putting bay leaves in the flour will do nothing except maybe make the flour taste a little funky.
Even if a mill sifts the flour to remove the weevils before packaging, it won't remove their eggs. With time and an above freezing temp they will hatch.
I would take the bag back to the store and swap it for a different brand. If you want to write the producer, look for any production numbers on the bag and write these down so that you can supply this to the mfg. For example - I have a bag of Gold Medal flour that has a "best by" date stamped on the top followed by "KC155112". The best by date and the code number will help them identify when and where it was processed/packaged - and possibly where the grain came from.
Of course - you could also just sift the flour before using it and toss the weevils out. Or, leave them in and just think of them as added protein.