Wash the tablecloth by hand. Mix a solution of ½ scoop of powdered oxygen bleach and enough water to cover the tablecloth.
Soak the tablecloth for four to six hours. If the stain is still visible after this period of time, let it soak overnight.
Wash the tablecloth on the washer cycle as directed by the label on the tablecloth. Wash with oxygen bleach in as hot a temperature of water as the label directions allow. Washing in hot water at 120 to 140 degrees F lifts stains, assuming the fabric tolerates it.
Hang the tablecloth on a clothesline by stretching it across the line as tightly as possible. Use as many clothespins as necessary to keep the tablecloth taut so that it dries evenly and is completely exposed to the whitening effects of the sun.
Repeat the process if the stain does not come out after the first treatment.