"I wonder if you would not get the same effect from using nothing
at all. " :

Actually, I've tried a number of times not doing anything, and without
fail, the drain always cloggs up. But you have to realize, I'm not
talking about an occasional shower to remove some sesame oil. I give
myself full-body oil massages every morning when I wake up, so there's
a lot of oil that can build up.

Thanks, everyone, for your input and comments. I'll try some of the
ideas you've suggested.

Bob