Originally Posted by foreplease
I don't know and surely never will - not from experience anyway. Someone who would do such a thing is probably slinging urea. Wondering what I said that would raise this question.
Means I have never done it, even when it was 'current science,' and never will.
Many people here - and I am one of them - have more reasons than you have tools. I do not ever do anything without a reason or purpose. Perhaps you should find that chart. I admit that I do not know it all, nor can I remember it all; it is a very useful chart.