Nobody likes stinky garlic fingers, especially not vampires. If, like Sookie Stackhouse, you have a thing for vampires, or just don’t like that post garlic tang on your fingers, get wiping your fingers either side of a big knife. Obviously use this recommendations sensibly and avoid the sharp part of the knife (point the edge away from you) and clean the garlic off the knife first.
It’s possible to buy metal pebbles as a gadget which does exactly the same thing and is therefore unnecessary. Use a kitchen knife and have less stuff!