On Jul 11, 10:06 pm, Smitty Two wrote:
In article .com,

BobK207 wrote:

snip



I wonder how the commercial root killer products (copper sulfate) stay
on the market if they wind up killing the whole tree & not just the
roots?

A matter of dosage?

Maybe but the commerical stuff comes as crystals in a 1 quart plastic
bottle a few pounds I think

as I recall you dump 2 (or 3?) portions into the toilet & flush to
distribute

let sit over night (I think) & the roots in the pipes are supposed to
disintegrate