of the club soda in a fabric and damp the area that is affect with it until the stain is totally removed. do your best to make sure that you do not scrub the area; these might actually spoil the fibers in the carpet. so be careful not to ruin your carpet with the soda.
some stains can really be tough to clean off, i mean really tough. imagine you stained your carpet with pen ink. trying to clean it with water will not work, so try making a mixture of cornstarch and milk in form of a paste and then small quantity and apply it on the stained area. after 