Powders or bars are more sustainable than liquids or pods. This is true for soap, detergent, and other products. Many products are sold as liquids or pods. Unfortunately, liquids are heavy and expensive to transport. Pods are highly concentrated, but may not dissolve fully in the sewer system. If you buy powders, bars, or tablets instead of liquids: You can significantly reduce the weight that needs to be transported. This, in turn, reduces your environmental footprint. # Laundry and dishwasher detergent Laundry detergent powder is easy to find. Dishwasher detergent powder isn't that hard to find, either. # Bar soap vs. syndet bars Bar soap is widely available. But, depending on your local water hardness, it might clog the pipes over time. Then you have to disconnect the pop-up drain and clean the soap residue out from the drainpipe. Where I live, there's moderately hard water; so syndet bars are best. Dove syndet bar soap is difficult to lather.…