http://www.greenerchoices.org/products.cfm?product=0710gpw&pcat=homegarden&EXTKEY=NG0N01111(This article is adapted from the the November 2011 issue of Consumer Reports Magazine.)
Different types of detergents have joined the long lineup of liquids and powders on store shelves, and Consumer Reports included some in the latest tests which involved washing 1,000 pounds of laundry heavily soiled with blood, mud, chocolate ice cream, grass, red wine, ring around the collar, and tea.
Though convenient, the new types aren't among the better choices. Plenty of the more conventional detergents are higher-rated including greener brands.
Greener packaging
A few words about packaging. More detergents are claimed to be concentrated. So you'll use more per load of a brand's 2X version than you will of its 3X detergent, but price per load is similar.
Thanks to new ingredients, many detergents have been reduced to a half or a third of their former volume (you'll see 2X or 3X on their packaging). And yet each downsized package promises to wash the same amount of clothes as the bulky old package it replaces.
FULL story at link.