On damp nights, slimy salamanders (Plethodon) will occasionally wind up in my kitchen. I can only assume they can squeeze between the cracks of doors, since there are no open fissures and we keep doors closed overnight.
Most of the time we find them in the morning and release them unharmed, but this morning I found one that had been inside for several hours at least. As there is no moisture in the house it had dried and there were all manners of lint, dust, and pet hair stuck to it. I didn’t know what to do, so I gave it a bath in warm clean water, picked off the scraps, and let it go. I checked on it a few hours later; it was still alive but it didn’t look like it was doing so well. What could I have done differently, if anything?