What do they look like?
Mature bed bugs are about the size of an apple seed (approximately five millimeters) said Terminix
The pest control site continued: “They are reddish-brown, wingless and flat, although they swell up like a torpedo after a blood feeding.
“When that happens, they change to bright red in color, taking days to return to reddish-brown.
“Immature bed bugs are categorized by one of the five immature stages as they approach adulthood.
“They can also be seen by the naked eye, though the bed bugs in the youngest stage are very difficult to spot.
“Eggs are even smaller and much harder to see but can provide another sign of bed bug presence.”