Laundry detergent pods became popular around 2012. Rather than measuring out detergent, you throw a pod in your washer and it does the rest. The "capsule" is made from a type of plastic that is water soluble.
The same idea was also applied for dishwashers.
Recently, I got a free sample of dishwasher detergent pods, which I found to be convenient, and also more effective in washing my dishes -- with powdered detergent, I often had residue remaining on some dishes.
Before I consider switching permanently, however, I want to understand the environmental implications. Are detergent pods better or worse for the environment?
I'm mostly interested in a comparison of powdered dishwasher detergent to pods, but info on liquid detergents and laundry detergents would also be of interest. Assume I'm already making environmentally conscious choices otherwise, using proper amounts of detergent, cold water for clothes, air drying for dishes, etc.