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There is some powder stump removers that you can buy to use for potassium nitrate. Just make sure there is no other additives. One brand is "Greenlight stump remover".
I've heard of others using vitamins in the substrate, but I have no personal experience with it.
There is some powder stump removers that you can buy to use for potassium nitrate. Just make sure there is no other additives. One brand is "Greenlight stump remover".
I've heard of others using vitamins in the substrate, but I have no personal experience with it.