jgharston wrote:
Yes, eugh.

Probably because the recent weather has been so cold, but in the last
couple of weeks a couple of times I've discovered a slug asleep
clinging to the tiled wall of the shower Since I found the first one I
keep the bifold door fully closed, and wear my glasses into the
bathroom and check before going in. They still arrive. Where on earth
can they be coming from?

I scoop them up with a old loo roll and toss them down the toilet.

JGH

No problem.
http://www.anapsid.org/slugcleaner.html