However, I point out that the privy was considered a place where one was susceptible to demons and witchcraft. The second point is illustrated by a wonderful story told on this page:
R. Hisda and Rabbah son of R. Huna were travelling in a boat, when a certain [non-Jewish] matron (matronita) said to them, ‘Seat me near you,’ but they did not seat her. Thereupon she uttered something [a charm] and bound the boat; they uttered something [a counter-charm?], and freed it.
Said she to them, ‘What can I do to you, seeing that you do not cleanse yourselves with a shard (in the privy), nor kill vermin on your garments, and you do not pull out and eat a vegetable from a bunch which the gardener has tied together’ (but untie the bunch first)?
The story is told to indicate things which expose one to witchcraft. Uncommented upon is the fact that the rabbis knew the magical words to counteract the witch’s incantation.
You go, rabbis!