The third sign of a bed bug infestation is seeing bed bug droppings. Bed bug droppings will look like little black pen marks. The bed bugs will release these droppings after feeding. They are easiest to see on cloth, such as on bedding or mattresses.
Of all the signs related to a bed bug infestation, bites are probably the most obvious (and most common). Bed bug bites can be flat or raised, and are characterized by itchy, red spots that tend to show up in a zigzag or cluster.
Or rather, their mattresses. That's right—bed bugs can run rampant in any hotel room, regardless of location or price. Thankfully, pest control experts Rentokil.com have created a comprehensive guide to checking your hotel room for bed bugs. The most obvious place to find bed bugs is—you guessed it—the bed.
When a bed bug infestation is present, the most obvious signs are visual—seeing physical bugs on your bed or another surface. However, there may be another sign that is not considered as often: the smell of bed bugs.
The first sign of a bed bug problem is obvious: the bed. After bed bugs feed on humans, they'll leave behind blood stains resembling small rust spots. These will usually be found near the corners and edges of the bed. Bed bugs also shed their skin, or molt, several times as they mature, so you may find their oval brown exoskeletons during your search.
One obvious identifier of a bed bug problem is the appearance of bed bug bites on the skin. Bed bugs tend to work methodically in straight or slightly zig zagged lines, leaving itchy red bumps in their wake. You may even notice small dots of blood on your sheets.