Removing dry sheaths on cane type orchids

[Iklaikk]

I read something recently that said you should remove the dry papery sheath from your canes. I had never heard that before.
Do you all remove the sheath? Is it better to leave it, or is it just a place for pathogens to hide?

For clarification the sheath I am talking about is left from when a leaf dies and falls off, the base of the leaf where it wraps around the cane of any cane type orchid dries and turns papery.