Not sure if this was directed to me, but what I did with the 30:1 citric acid was added more water and neutralized it more with sodium bicarbonate, before dumping it down the drain. At 30:1, the citric acid solution to begin with is not very concentrated at all. I'm sure what I did was more than enough, considering lemon juice, soda, etc. are likely way more concentrated of acids than what I used. Next time, I'll probably just water it down before dumping.
