Eric wrote:

But the local university says, you should never use a wet sponge.

Lots of folks will be willing to accept a better way, if there is a good
reason given for it (but equally ready to reject a new way, if it's
presented without reason).

What's the university's reason?

--
John Miller
Email address: domain, n4vu.com; username, jsm

The only difference between the saint and the sinner is that every saint has
a past and every sinner has a future.
-Oscar Wilde