Root bug question. Are these rootbugs

[Daemos]

No one can give me an awnser to what I am seeing. So I try you guys. Somehow you know a lot more then anyone else.

For 5 years I am having a plant that has some kind of root eating bug in the soil. The bugs are round, very small (no photo possible), they glimpse in the light and are very dark brown in color. They hate sunlight and only come to the surface at night. They start from the middle and go up laying eggs in tiny white balls of wool. (like the root mealy bug). They are extremely resistant to poison. They have imunnity to chlorocamphor, 4th generation pyrethroids and systemic poisons barely kills them. Repotting has no effect.

The strange thing is that after all these years no other plant has become infected by these ANNOYING little bugs.

I am certain they eat the roots since the plant has started looking bad since the infection and roots are being eaten away (glass pot).

Are these insects or are we talking about some sort of mite or spider. If someone knows what these things are I can make them a nice cocktail of poison and exterminate them once and for all.