When bedbugs bite, like mosquitoes, they inject an anesthetic that prevents the host from feeling the bite, and an anticoagulant for blood flow. Bedbugs are normatively nocturnal, though they can bite during the day or with light, but they usually occur while people are sleeping. Feeding takes three to 10 minutes, depending on maturity, and immediately after feeding the bug crawls off to digest their meal in a safe place. Bite marks can be random or in a straight line.<ref>http://www.cdc.gov/nceh/ehs/Publications/Bed_Bugs_CDC-EPA_Statement.htm</ref> Anecdotal evidence suggests they wait until the host is in their deepest part of sleep, usually 3-5am. | When bedbugs bite, like mosquitoes, they inject an anesthetic that prevents the host from feeling the bite, and an anticoagulant for blood flow. Bedbugs are normatively nocturnal, though they can bite during the day or with light, but they usually occur while people are sleeping. Feeding takes three to 10 minutes, depending on maturity, and immediately after feeding the bug crawls off to digest their meal in a safe place. Bite marks can be random or in a straight line.<ref>http://www.cdc.gov/nceh/ehs/Publications/Bed_Bugs_CDC-EPA_Statement.htm</ref> Anecdotal evidence suggests they wait until the host is in their deepest part of sleep, usually 3-5am. |