Bed bugs are basically parasitic insects of the cimicid family that feed exclusively 
on blood. The name “bed bug” is derived from the preferred habitat of Cimex lectularius: warm houses and especially nearby or inside of beds and bedding or other sleep areas. Bed bugs are mainly active at night, but are not exclusively nocturnal. They usually feed on their hosts without being noticed. Bed bugs are attracted to their hosts primarily by carbon dioxide, secondarily by warmth, and also by certain chemicals. Bedbugs prefer exposed skin, preferably the face, neck and arms of a sleeping individual. Although under certain cool conditions adult bed bugs can live for over a year without feeding, under typically warm conditions they will try to feed at five to ten day intervals and adults can survive for about five months without food.
It takes between five and ten minutes for a bed bug to become completely 
engorged with blood. In all, the insect may have spent less than 20 minutes in physical contact with its host, and it will not attempt to feed again until it has either completed a molt or, if an adult has thoroughly digested the meal.
Once feeding is complete, a bed bug will relocate to a place close to a known host, commonly in or near beds or couches in clusters of adults, juveniles, and eggs which entomologists call harborage areas or simply harborages to which the insect will return after future feedings by following chemical trails. Bed bugs use pheromones and kariomones to communicate regarding nesting locations, feeding and reproduction.
Let’s take a look at the following article which reports the wrong doings of bed bugs;
Woman suffers 300 bed bug bites at Auckland motel
Saturday 28 Dec 2013 9:12a.m.
A woman bitten by more than 300 bed bugs at an Auckland motel wants all of her medical expenses to be paid.
Debbie Roome was staying at Auckland Airport Kiwi Motel in Mangere earlier this month when she suffered a severe allergic reaction to the bites, which covered her body in painful, itchy welts.
The Christchurch local was visiting Auckland for a night for a friend’s graduation. After falling asleep she woke to find her bed infested.
“I woke up at 3:30am and shone my cell phone on the bed and saw these bed bugs scuttling off in every direction. I didn’t want to wake my friend up, so I sat on the edge of the bed for the next two hours and told them when I checked out that the room was infested and I’d like a refund,” Ms Roome says.
It wasn’t until she reached the airport to take her flight that she approached staff at the Air New Zealand Koru Lounge for help.
“It turned out to be over 300 bites. By the time I was supposed to fly home I had swollen up in these big welts all over my body and my face. My lips were turning blue. Air New Zealand wouldn’t let me fly home because of the swelling and the possibility of going into shock and not being able to breathe,” she says.
She then received medical treatment and returned to Christchurch two days later. But just before Christmas the bites flared up again, forcing her back to the doctor to receive a course of antibiotics and skin cream.
Mark McDonald is the “bug king” and has made a living out of eradicating the parasites, and says Ms Roome’s case is one of the worst he’s seen.
“That’s at the upper end of the scale, 300 bites could equal up to 300 bed bugs that were on her,” he says.
Ms Roome has received a refund for her hotel room, but only half of her expenses have been reimbursed and she wants to be compensated further.
Auckland Airport Kiwi Motel would not talk to 3 News today.
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