Im not sure what the difference is between biological and non biological washing powder. Is the biological one better for the environment? In terms of quality of wash and protection of colours which one of the two is the better one to use?
ah...so biological is stronger and is ok for whites but tends to discolour? Is this the only difference in the powders then? Is it universally known that biological is more effective at cleaning? Is this why it is still being sold rather than just having non biological?