How many years have cockroaches existed on the earth?

Cockroaches are one of the earliest creatures on earth. As early as 250 million years ago, this small insect with strong adaptability to life began to be active on the earth. Cockroaches have survived floods, fires and famines for hundreds of millions of years. At that time, many animals and small insects were doomed to extinction because they could not cope with environmental changes, but cockroaches were not eliminated by nature, and they even passed the test of outer space and nuclear matter. They survive for one month without food and two weeks without water, which shows their strong viability. Today, it continues to multiply and its footprint has spread all over the earth.