There are about 1900 species of termites in the world, and their body length ranges from 0. 3 cm to 2 cm. 5 centimeters. Although they are small, they are very harmful to human beings. They feed on wood fiber, which will corrode houses, bridges, furniture, floors, forests and so on. Because of their powerful destructive power, they are called "toothless tigers" by Guangdong people.

However, in nature, termites are decomposers of rotten wood and rotten wood. They are one of the few animals that can decompose cellulose, which can be made into nutrients and returned to the soil, so they play an important role in the ecological cycle. In a word, termites have both disadvantages and advantages.