DIY Speaker and IC Cable Burning

I have read posts where people made adapters so that
they could run AC through their cables like an extension
cord to burn them in. They would use an appliance like
a Vacuum cleaner. This will clearly destroy cables that
have network boxes like MIT or Transparent but for
non-network based cables this almost sounds like a good
idea. So I wanted to ask about different methods
people have used successfully in their DYI cable burning.
(Both for Speaker and IC cables)

One more thing. I have also read that people say that
cables slowly revert back to their original sound if
they are not used (played) often enough. They loose
their dielectric charge or something of that nature.
Can anyone say whether they have experienced this?

Thanks
Tom