During the record cleaning seminar at Rocky Mountain audio fest, to be fair they all were from companies that sell cleaning products and or machines/tools and they all said how terrible it was because it’s “toxic” I think of you go back through this thread we may have discussed it. They all talked about how you should know what’s in the cleaning “solution” you buy except they don’t tell you what makes up there’s. Tergikleen is effective compared to just isopropyl alcohol mixed in and “toxic” isn’t specific to what degree or in what ways even water can be toxic in absurd amounts to the human body. I decided to try the stuff acoustic sounds sells, the guy on the panel from there says they use it amongst other products depending on the state of the record being cleaned. Obviously like with most things you can’t expect one product or method to always be ideal but it seems like with cavitation if you anything that breaks down oils and other contaminants and you rinse the record it should be just fine for most records.