If you can't see every bed bug in the area, you can't know when to declare victory. You may have steamed, sprayed, and encased every nook and cranny that you can reach, but you don't know if
But, a blood meal can be difficult to find at times, say when an apartment becomes vacant or a wilderness cabin is unused over the winter. Not to worry, bed bugs seem to have adapted to starvation and while egg laying may be put on hold, bed bugs can survive for surprisingly long periods without blood.
Some say 18months, whilst others claim that bedbugs that are well nourished can survive for three years in a laboratory. Many factors affect life span, but most agree that 12 to 18 months without a reliable food source is about right.
Scientists debate this point, but evidence suggests that at normal room temperature, about 23 degrees Celsius, bedbugs can only survive two to three months without a blood meal.
The exact amount of time a bed bug can live without a blood meal is still being debated in scientific circles. Current research leads people to believe that the average bed bug can survive in a home or office setting for approximately three months without feeding on human blood.
Bed bugs can survive without food (human blood) for 80 to 140 days; older stages can survive up to a year or longer without feeding than younger ones. How will I know if I have bed bugs? You may suspect bed bugs if you wake up with bites or welts on your body (small, red rashes) that grown itchy and painful, and especially if this happens repeatedly.