Bedbugs aren't known to spread disease to or among people, but that doesn't make them less creepy-crawly. About the size of an apple seed, they feast on human blood and typically bite a sleeping host at night. Josh Cassidy/KQED hide caption toggle caption Josh Cassidy/KQED Shots - Health News How Best To Snag And Destroy Bedbugs? KQED July 9, 2019 Vigilance and heat are currently your best weapons against bedbugs, exterminators say. But scientists are working on a way to give the bugs the hook with a strategy inspired by a Balkan folk remedy.