What are the advantages and disadvantages of laundry powder?

Advantages of laundry powder include its cost-effectiveness, high concentration, and longer shelf life compared to liquid detergents. It often has a lower environmental impact due to less packaging and fewer preservatives. However, disadvantages include potential difficulty in dissolving in cold water, which can lead to residue on clothes, and the risk of spilling or measuring inaccuracies. Additionally, some users may find powders less convenient than liquids for quick use.