Reply to "Is there a track cleaner that actually works?"

I use 2 centerline cars, both with goo gone. I put round fishing line weights in the tube. It rolls good that way.

Then I walk around the layout and manually scrub with a scotch bright pad, or a rag, while the cars are going around the track. 

I’ve found that the best way to keep the track clean is by judiciously oiling engines and cars. A little goes a long way.