After roughing a bowl out, I throw that baby into DNA. Lately, it's looking more like really dirty bath water. Actually more like coffee... Anyway, as I understand it, the way DNA works is that it pushes out the water/moisture in the wood and replaces that water with itself. Eventually, don't you end up with more water than DNA in your bucket?
So, what do you do?
1) Keep adding more DNA to the mix.
2) Throw away the old stuff at "some point", and start anew.
3) I don't need no stinkin' DNA!