I just got a new ping pong paddle, and I want to be able to clean the rubbers without damaging them or affecting their tackiness. On Amazon I see lots of expensive little spray bottles for cleaning paddles. What substances are in those bottles? Perhaps I can clean the paddle using stuff I have at home. Would rubbing alcohol, or soapy water, or something else be safe to use to clean the rubbers?
When I was most active (decades ago), I used Butterfly's Tackiness Drive on my forehand and Sriver on my backhand. What I used to clean both rubber sheets was simple window spray cleaner and paper towels. In a pinch you can get by with just water, but Windex (or any other variant) does quite nicely. I saw no adverse results from using it over a period of many years.