Regular cleaning maintenance of your ping pong paddle will save you money over time. To make sure your paddle maintains continued responsiveness and grippy rubber, you should ensure that you clean all the dirt, grime, or oil from it after each match using alcohol.
The first thing you should do is remove any visible dirt or debris from the paddle. Then rub alcohol on a soft cloth. Be careful not to scratch the rubber on the paddle surface. Do not use anything with fiber-like materials as that could damage the rubber.
Use the cloth and alcohol to gently dab the paddle and remove any set-in dirt on the surface. You should do this in circular motions to avoid any possibility of damaging the paddle.
Once you have cleaned the paddle, you should leave it outside and allow it to dry. You may be tempted to wipe it down to dry it off quickly, but it is best to allow your racket to dry slowly.