You definitely want to use a quality shampoo. Make sure to bathe your puppy only when it needs it because otherwise, too many baths can damage the skin and strip all of the natural oils out of its coat. You can start bathing them once they are 6 weeks old. You can either wash them in a tub or a sink. If the weather is warm enough, you can bathe them outside and let them dry naturally. It's VERY important that they dont get cold or chill. Regular grooming is also essential for a puppy.