--- In papercreters@yahoogroups.com, "Janoahsh" <janoahsh@...> wrote:
>
> Hi Ernie,
> Will the Boric Acid have a tendency to wash away with continued
> wetting?
I would stick with either Borax or a Borax heavy Borax / Boric acid solution. Just from my reading, Boric Acid has some potential to cause minor problems if leached, whereas Borax is less or none, depending on what you read.
I would guess that if it was constantly wet and drained across the entire substrate you would have leaching of some amount. Having done no experiments with it, I don't know how much.
I do know that the cellulose insulation fibers are impregnated with some borax or other insect / mold deterrent as well, so perhaps it would be bound in during the initial calcification (right word?) of the PC as well.
- Ernie
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