There are two kinds -- external and internal. One is reportedly easy to remove -- I think the external kind. The other kind not as easy and can be painful, from what I'm told.
Hopefully the OTC treatments are helping...
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles