Cutting down trees can be risky. Professionals from a tree cutting service will typically use power tools like chainsaws in the process. The tree's diameter matters, and will have an effect on which exact piece of equipment you'll need to use.
Homeowners have to make sure that they've maintained this chainsaw effectively, since these devices can be dangerous when they aren't handled correctly. There are also certain situations where people should absolutely contact a tree cutting service and avoid completing the tree removal work for themselves. If the tree is very big, noticeably rotten, or close to a house or other building, the potential dangers of finishing the task without help should probably be too high.
People sometimes think that they'll just need to balance the chainsaw against the trunk of the tree and start cutting. The people who have cut down holiday trees might have used that strategy. However, it is different if they are trying to fell a tree that is much larger than that. They're going to have to cut a chunk of wood out of the tree in some cases. Once it has been removed, they can continue felling the rest of the tree, and they'll do so more safely.
