Against dandelions is actually not really a remedy.
However, it helps to pull the dandelions with roots from the soil.
This minimizes the risk in any case smaller than them coming back.
All parts of the dandelion are good to eat, was added to a salad, for instance.
Additionally, the root that calcium to the surface is removed and makes it lighter ground. When a dandelion growing in your garden so that is an advantage.