Bugs are coming in the exhaust vents in the ceiling of the bathroom - any suggestions?

:) Ath189 - Go up in the attic and get above the bathroom to we-here the vent is and see if the vent has a screen over the vent out let. If it is the pesky roach , get a good roach spray and give it a good spraying after you do the first part I said . Now roaches hatch out every 21 days so it will usely take spraying ( 3 times) they love to nest and lay eggs in nice warm places. Good luck ,Don't BREETH THE FUMES FROM THE SPRAY> COVER MOUTH & NOSE WITH WET TOWEL OR SOME SORT OF RAG> GOD BLESS : F.B.E.