But not on the playfield! Unless it has mylar on it.
Anyway. From a mention in my WD? post awhile ago, a few people had asked about it and wanted to see how well it worked. So I compiled a few demonstrations of this stuff in action for this result (below). Its not the best (presented, quality is 720p) video but it shows what it can do. Also works great on the backside of lamp inserts and lamp PCB boards. Will not harm connectors or leave any trace of cleaning material behind.
Happy shopping!