How to keep those tiny dots of threads appearing on the insides of the socks?

Answer 1

There really is no way to avoid the *pilling* but if you'll buy the better quality socks, it will happen less.

Answer 2

that is called pilling and most materials that socks are made of will do that after repeated wear You can take scissors and cut them out but it will be a never ending battle as they will come back right away.