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

I read this thread a couple months ago when I was looking for a better answer.  I have a layout with tunnels, and they are nearly impossible to clean by hand.  Over the years I've used an old Lionel track cleaning car and a North East Trains car.  The North East Trains car worked OK after I fashioned a shell to ride on top of it and add weight, but I didn't run it often enough and was not satisfied with it's performance.  So, after researching here, I bought a CMX cleaner.  I have found it works better than anything I've tried, and I'm very satisfied.  The only thing better is elbow grease when I take the time and where I can reach the track on the layout.