The best way to determine if bedbugs have infested your home is to spot their activity and look for signs of movement. These signs can indicate that they have survived treatment. Check for signs of activity on a daily basis for a few days. Checking daily for a few days can help you determine the level of infestation.
Female bedbugs lay about 200 to 500 tiny white eggs in their lifetime. They lay between two and five eggs a day on rough surfaces near their host. After the eggs hatch, they require 10 to 15 days to develop into nymphs. Once these nymphs reach adulthood, they are able to mate and reproduce. Depending on temperature, the life cycle of bedbugs can last between five weeks and four months.
While bedbugs cannot transmit diseases, their saliva can cause allergic reactions in some people. Bedbugs are often injected with the food of their host in a feeding event that lasts between three to ten minutes. Feeding occurs while the host is asleep, so the bites may not be noticed until a few days after the feeding. During this time, the bedbug will have matured and can begin reproducing. A single female bedbug will lay up to seven eggs per day, and hundreds during her lifetime.
Bedbugs can be difficult to detect without the help of a professional. The best way to detect bedbugs is by looking for their eggshells or fecal matter. While this is not 100% accurate, it is a good indicator if you have bedbugs in your home. You can also collect specimens and have them professionally examined if necessary.