What are the signs of insects entering the house?

It is normal for insects to enter the house. First, many insects have phototaxis, such as moths and termites. Secondly, the house is also a refuge and activity place for many insects, such as flies, cockroaches and fleas. Thirdly, insects entering the house indicate that the weather is getting cold, which is mainly caused by many reptiles, such as ants, crickets and bedbugs. Generally speaking, in autumn, just close the doors and windows.