Replacing DNA after use

[Donny Lawson]

Do you need to replace your DNA after you use it for a while?,or just as it gets used up on the bowls?
Donny

[Scott Hackler]

Just after the level goes down from what is absorbed into your bowls and such. It doesnt "go bad" but it will become dark as you soak darker bowls. Although I havent ever noticed the dark Dna ever staining any light colored blanks.

[Bernie Weishapl]

As the level of mine goes down I just add more. Mine is almost black from soaking a bunch of walnut but I just soaked some maple with no apparent problems.

[Steve Schlumpf]

I just add more to the bag when the level drops. Never had a problem with it getting old!

[Richard Madison]

At each use the percentage of water in your DNA/water mixture will increase slightly, but you are adding a very small amount of water to a relatively large amount of DNA. Hence it will be a long time, if ever, before you see any difference in the effectiveness of the method.