Bed bugs are nocturnal so turning off the lights may make them more likely to come out to search for prey.
Bedbug bites can be red and itchy and are often in a line or a cluster. Some people may have an allergic reaction to the bites.
The bugs can be dark yellow, red or brown and generally only about 5mm long while eggs are usually white in colour.
If tourists can’t see the bugs, they can look for red or rusty stains on the mattress which could be a squashed bug.
