Below you can see the white eggs from female bed bugs. Bed bugs can live up to 18 months and females can lay 200-500 eggs over the course of her lifetime. you can see more live bed bugs and the black stains on the mattress. These black stains are bed bug fecal blood. This is the #1 sign you have bed bugs. When bed bugs take a blood meal they defecate almost immediately leaving a dark stain. These stains can be found of sheets, mattresses, or also around harborages where bed bugs are hiding when they are not too busy feeding. Notice how dark the mattress is in comparison to all the white eggs. Now that is some well fed bed bugs! Both male and female bed bugs must feed at least every 14 days in order to reproduce. Don't let these uninvited guests eat for free in your home!