 speed up the microbial process of decomposition. So basically what you do is you drill some deep holes into that stump, and then you pour those chemicals into the holes, and then cover the stump with a tarp. And you've got to wait about four to six weeks, because then what's going to happen is that wood is going to become spongy. At that point, you can chop out the softer wood. It's still going to be exhausting, but not us.