Once your trees have been removed there are stumps left behind on the ground. Sometimes they can obstruct the future development or planting, or in the lawn and become a mowing or trip hazard.
The easiest and most cost-effective way of removing these issues is to have them rooted out. There are a couple of methods from earth moving equipment to using stump grinders. As stump grinders are much smaller and more mobile, it becomes a more sensible and much cheaper method of stump removal.