Most people assume bed bugs stick to the dark. It's a reasonable assumption: you wake up with bites, but you never actually see anything. The truth is a little more nuanced.
Bed bugs are generally nocturnal. Their peak activity tends to fall between midnight and 5 a.m., when most people are in deep sleep and less likely to notice a feeding. During the day, they retreat into tight cracks and crevices close to where you sleep, hiding in mattress seams, bed frames, baseboards, and upholstered furniture.
That said, do bed bugs only come out at night? Not always. Light itself doesn't keep them away. What they're really responding to is the presence of a warm, still host. If that host is available during the day, bed bugs can and will come out.
Here are a few reasons why bed bugs can come out during daylight hours:
During daylight hours, bed bugs stay close to where they feed. Common daytime hiding spots include:
Their flat bodies allow them to squeeze into spaces as narrow as a credit card, making them very difficult to spot without a thorough inspection.
This is one of the most common myths about bed bugs and light. Leaving a light on will not stop bed bugs from feeding. If they're hungry and you're nearby, they'll come out regardless. It might delay them briefly, but it won't protect you.
The only reliable way to address a bed bug problem is through professional treatment. Our pest control team can carry out a free inspection and advise on next steps, which may include heat treatment, steam, or chemical options, chosen based on the size and location of the infestation.
Whether you've spotted a bug in daylight or woken up with unexplained bites, the advice is the same: get it checked out. Bed bugs are notoriously difficult to eliminate without professional help, so call us or click the button below.
Bed bugs are most active between midnight and 5 a.m., when most people are in deep sleep.
While they prefer to stay hidden during daylight hours, bed bugs do move during the day, particularly when they're hungry, when the infestation is large, or when their hiding spots are disturbed.