If I buy the lowest price Drano does that somehow mean that my drain wo n't be clogged ? Apparently yes . I poured the whole thing down the drain and let it work for an hour like the bottle told me to do . Then I flushed it with hot tap water .
Question: How many bottles of Drano did I have to use to unclog my drain ?
The answer to the above question:


None of the above choices .