Drilling holes in stumps is a waste of time. Buying so-called stump rot potions and treatments is a waste of money. While a stump will eventually break down naturally with the help of fungi and insects, that process can take a long time.
Burning a stump is time-consuming and rarely successful, while digging one out is extremely labor intensive.
Or, you could simply have us grind it with a stump grinder a machine specifically designed for the job.
Stump grinding is an efficient and inexpensive way to remove an unwanted stump without all the unnecessary hassle.