Other options to Spectracide SR?

[5280Reefer]

I found
The Science Company, NC-9871, Potassium Nitrate, (Saltpeter), 500g

and was wondering if this is a better option to Spectracide, any thoughts?

 

[Velcro]

I would absolutely use a fcc or usp graded chemical like that over a stump removed.

 

[Randy Holmes-Farley Verified Community Expert]

There are many food grade materials online. I do not know if they are better, but they could be.

https://www.etsy.com/listing/222600..._search_query=sodium nitrate&ref=sr_gallery_3

https://www.butcherspantry.com/curing-ingredients/fccusp-food-grade-potassium-nitrate-kno3-saltpetre