How Do You Know If You Have Bed Bugs It can be difficult to detect and locate a bed bug infestation, but there are a few ways that will help you figure that out. One of the easiest ways to notice bed bugs is by the waste that they leave. They are good at hiding, but are detectable by the droppings they leave behind. Look for dark spots on your sheets, mattress, or other pieces of furniture. One of the most obvious ways to know that you have bed bugs is from bites. It is hard to catch them in the act, but their deeds will show on you in the form of red marks, or even swellings followed by itching if you have allergies. It is important to note that these bites can also resemble other bug bites, so other methods of detection may be needed. If you suspect to have bed bugs, then you can look in the major spots where they hide like mattress, seams, linens, curtains and furniture. There are slim chances that you will find a live one, but you can certainly find dead ones. You can always try to catch them in the ac