LOL, Yall! There's a method to this laundry detergent madness.....if you're washing in cold water, ALWAYS use liquid detergent, cause powdered detergent doesn't desolve well and will stick in streaks to your clothing....but you can always use powdered detergent in warm or hot water wash....and I prefer Arm & Hammer Detergent (yellow box) because it removes all lingering odors from soiled laundry better than any of the others....since I do laundry for a lot of my patients, this is a big PLUS....and it's less expensive than the more popular brands.....they all clean about the same.
Frannie B