Quoted from DaveH:Balls. Replace them early, replace them often. If you ever notice a scratch or dent in a ball (which can happen as they hit metal), get rid of it. Not tomorrow, not one more game, right in the trash. Most of the time they can be cleaned quickly. And sometimes the polish marks can look like issues, so check with your hands. Any type of ball damage will chew a playfield over time.
This is probably the best advice you’ll get and more important than waxing in my opinion. I know many people with home use stern games with thousands of plays that have never been waxed and still look like new. As long as your ensuring you are replacing your balls often and when signs of wear appear.
If you must absolutely wax, you need to use a 100% carnauba wax, which is harder to come by in Canada. Try p21s, but your eyes will go wide with sticker shock when you see how much a 100% carnauba wax costs. I don’t wax my newer games anymore, I give them an occasional wipe down with wizards mist and shine, sprayed onto a rag first, never directly to the play field. I find it works great! Believe this is the product jersey Jack recommends also for cleaning. Just my 2 cents, I’m sure you’ll continue to get lots of opinions.