I think red wine is chemically similar to the sugar + vinegar mix, so yeh, it sounds like that would work too.

Booger, wife also found another way to eliminate the breeding grounds in the drains, involved boiling water poured down (to loosen the debris), followed by something else, can't remember what she said. I have some off-brand drain cleaner gel, I may give that a try, since it's there & I don't have to go get something else...

__________________
Plug me into somethin'

If the theory does not conform to the facts, then the facts must be discarded.

No good deed ever goes unpunished

Never argue with an idiot. He'll drag you down to his level, & beat you with experience.