To remove baby formula, try an enzyme presoak (such as Biz or Axion). The enzymes actually digest the stain. You can also try putting unseasoned meat tenderizer on the area before you wash it.
Unfortunately, for items that have been in storage, the stains may have been there for some time and this may not work. You could also try a color-safe bleach to remove the stains.
You can remove a milk stain by soaking the stained article in cold water. Launder in hot water using chlorine bleach, if safe for the fabric. If a grease stain remains, sponge with dry cleaning fluid then rinse.