Bob Alston wrote:
Why not buy stump remover from a local hardware store. No-one will assume
anything except you got a stump to get rid of.

Bob, I live in the same general area as the original poster. FWIW, I
looked in just about every hardware/gardening store around last summer,
and _none_ of them carried stump remover. When I asked why, they
explained "Because it is dangerous." Hmm.

The search for KNO3 eventually brought me to the hydroponics outlet.

--
Andrew Roberts, Richmond Hill Ontario
royalwulff(at)sympatico(dot)ca