Protecting clothes from stains

To set colors when washing new clothes for the first time, add half a cup of white vinegar and half a cup of salt once the water is in. Wash with regular laundry detergent in cold water.

Getting milk out of clothes

To get milk out of clothes, sprinkle on unflavored meat tenderizer, which breaks down the proteins, and rinse in cold water. Presoak in enzyme product for 30 minutes if stain is new, several hours if stain is old.
From: MomCentral.com

Getting out Grass Stains

To get out grass stains, try rubbing with a solution of one part rubbing alcohol to two parts water on colorfast material.
From: MomCentral.com