For a mild, stain-free bleach, soak your delicates in a mixture of lemon juice and baking soda for at least half an hour before washing.

Soak oil or grease stains with baking soda and water before washing the clothes.

Washing fresh produce thoroughly in dilute solution of vinegar or bicarbonate of soda, and then rinsing in clean water will remove most potential contaminants, such as soil and surface residues.