Bed bugs are curious creatures that can infest anyone. They are truly frightening and ignorance is one of the largest factors in the situation that these clever bugs take advantage of. Keep yourself informed to stay safe from these terrifying critters. Here’s the skinny on all things bed bug from Live Science.

Bedbugs lurk in cracks and crevices and they’ve been living on human blood for centuries. Though they aren’t known to transmit disease or pose any serious medical risk, the stubborn parasites can leave itchy and unsightly bites. However, bedbugs don’t always leave marks. The best way to tell if you have a bedbug infestation is to see the live, apple-seed-size critters for yourself. Unfortunately, once bedbugs take up residence in homes and businesses, they can be difficult to exterminate without professional help.

Appearance, lifestyle and habits

Bedbugs are flat, round and reddish brown, around a quarter-inch (7 millimeters) in length. The ones that typically plague humans are the common bedbug Cimex lectularius and the tropical bedbug Cimex hemipterus.

A few decades ago, bedbugs were somewhat of a novelty in developed countries. But since the early 2000s, infestations have become more common in places like the United States, Canada, the United Kingdom and Europe, according to the U.S. Centers for Disease Control and Prevention (CDC). A 2013 study in the journal Nature Scientific Reports suggested that bedbugs have evolved ways to resist insecticides.

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