Procedure of removing old tea stain from white cotton shirt:
1. use salt water
2. soak in glycerin
3. soak in lime juice
4. pour boiling water over borax
Precautions to be followed while removing stains:
1. try to remove the stain when it is fresh
2. try chemicals on the corner of the fabric
3. use dilute and mild reagents first
4. rinse the garment several times to remove the effect of chemicals