Another youtuber used a grinder with a masonry grinding wheel to grind the roots down flat, to below lawn level, then grew grass over it. Your method is more thorough. With the price of the sawblade and the prying tool being less than my landscapers’s hourly rate, I’m going to try it. However, one thing to keep in mind is that trees spread their roots to brace themselves against wind, so be sure to update this video if you wake up one morning with a tree in your living room.