In this edition of Clean Everything, we explain why you should put down the liquid dishwasher detergent, ignore the dry-clean label, and more.Sometimes, in our rigorous testing to find the very best cleaning tools and methods, we unearth cleaning advice that strays from what our parents told us growing up. Or that makes our partners and roommates mad. Or that just seems … plain weird.For instance, in our testing to find the best dishwasher detergent, we found that powders, liquids, and pods are not built equal. “I am sorry to say this,” cleaning expert Andrea Barnes writes. “But that jug of liquid dishwasher detergent is the weakest performer of them all.”