To get rid of stains on pool table fabric, mix a few drops of a gentle detergent or wool wash with some warm water. Dip a microfiber cloth in the mix and lightly blot the stained areas - be careful not to scrub as you may damage the fibres. Make sure to wring out your cloth as much as possible before reapplying it to the board so that you don't over-saturate the felt. Once these areas have been treated, rinse them off with a damp cloth dipped in clean water - then let them air dry before using them again