How Long Will a Bed Bug Live? | Dr. Killigan’s

What is the Bed Bug Life Span?

Bed bugs are unique little creatures. Their behavior is different than many common household pests. They share the characteristics of ants and roaches in that they infest your home and can be difficult to eradicate, but their source of sustenance is much different. They are also like roaches and moths in that they hide during the day and are primarily active at night. Another difference that sets them apart is the lifespan of a bed bug.

What Are Bed Bugs?

Bed bugs, at the adult stage, are tiny flat oval-shaped insects that feed on blood. Most prefer human blood but will bite any warmblooded animals like dogs, cats, birds, and rodents. While they are similar looking to the tick, they are much different in behavior as well as treatment methods for eradication.

Where Do Bed Bugs Live?

You can easily guess where bed bugs live through their name. They live in and around the places where humans sleep and rest: beds, sofas, and recliners.  However, they also can nestle in behind baseboards, picture frames, light sockets and even bed frames. The tunnel their way into the material and build their nests. Then at night when an occupant is sleeping, they make their way out of their hiding place, and they feed on you. A bed bug life span depends on the ability to obtain food. You will see shortly why that is important.

How Are Bed Bugs Dangerous to Me?

One thing you do not have to worry about when you have bed bugs is that they do not spread disease. The pathogens that are in their bite do, however, produce a minor swelling and may itch. This can occur instantly or may not develop for a day or so. The danger is in scratching the itch and causing an infection, but this would come not come from the bite, but unclean hands irritating the bitten area. There is the possibility of a reaction to those with sensitivities to bug bites.

How Long is a Bed Bugs Life Span?

This is where bed bugs differ from moths, fleas, and ticks. Most of these insects have two or three cycles. Bed bugs have several cycles. Each stage is followed by a molting phase that leads to a new life stage.

  • Egg – Bed bug eggs are small, about 1mm; the size of a grain of sand. They are difficult to detect because bed bug eggs are often the color of the mattress they are hiding in. They are sticky and will adhere to the bed material the bug lays it on. Eggs will hatch in six to ten days.
  • Nymph – This is where the bed bug life cycle gets interesting. The bed bug nymph life lasts much longer; up to six months under favorable conditions. The reason this stage lasts so long is that a nymph molts five times before it becomes a fully mature adult. However, the nymph will need to feed at least once between molting stages. Nymphs during their first stage are 1.5mm, about the size of a pinhead. By the time they complete the nymph stage, they will have grown to 4.5mm, the size of a BB pellet.
  • Adult – Adult bed bugs are five or 6mm long and are the size and shape of an apple seed. The female will continue to feed before she lays eggs, and the cycle begins again. She will lay batches of up to five eggs between feedings. One female can lay 200 to 250 eggs over her lifetime.


The bed bug lifespan will vary depending on the surrounding it is living in. An adult bed bug will live up to nine months under prime circumstances. Temperature, humidity, and access to food are the factors in determining their life span. However, don’t think you can starve them out of your home. Even a stage one nymph can go months between feedings. Adults can last almost a year. At the first sign of a bed bug, one must act. One method is Dr. Killigan’s Six Feet Under ™ . It is an on-contact spray that will help dispose of the unwanted pests.

The Final Word

No one wants to have a pest problem. Therefore, the professionals with Dr. Killigan’s are dedicated to the perfection of “Killing Them Softly™.” This company motto reflects our product quality in that we never use harsh chemicals in their design. All our products are 100% safe and toxin-free. Six Feet Under ™  is a cottonseed and clove essential oil solution. It is a proven method to dispose of bed bugs and is safe to use around pets and children.

In addition to our top of the line products, each of them carries a 100% satisfaction guarantee. If you are not completely satisfied with the result of a Dr. Killigan’s product, contact us, and we will do what is needed to make things right.