I tried a specially designed product - not pool shock - it didn't work for beans. It was just an experiment. Many deep - 1" - holes in each stump. A tablespoon in each hole. None of my stumps are anywhere near the yard that is around my house. They are all out scattered around 80 acres - not bothering anybody.
I have a VERY effective 180 degree barrier of large Ponderosa pine around my yard, house & outbuildings. It's a big half circle. I go to great pains to keep them healthy as possible. They are the barrier that protects me from any strong winds that will come out of the SW. About 95% of all winds, around here, come out of the SW.
I would hire/rent some type of stump grinder if I wanted to remove stumps. The heavy equipment necessary to remove my stumps would tear my property to crap.