I bought some and was impressed with the results. I even let others use it and they wanted some as well. I've used a lot of different products and this has to be the best I've seen. My favorite was always the Lane Masters cleaners and this Purple Stuff can be used during league play. I didn't clean it after every shot, but more after each game. It doesn't take much and I used a micro fiber towel. I had a few that was hitting the pocket and I was watching him leave 10 pin after 10 pin. He said it's not my night and he was using a hp Storm ball. I said do you want to try some Purple Stuff cleaner? He said it couldn't hurt. The next pitch he left a 9 pin and he said at least it wasn't a 10 pin. The ball did seem to have a little more angle going through the pins. Was it a natural transition? I don't know, but he did strike out in the 10th frame after using the Purple Stuff. I don't have an axe to grind in this, all I can do is tell what I saw. I'm more of a down an in player with not a lot of revs. When I start leaving corner pins I clean it with Purple Stuff. It could be more mental for me being a lower rev player, but it seems to help. I'm also going to be 60 on my next birthday and I'll take all the help I can get! Just my $.02, Bruce