Good Track-Cleaning Car Suggestions?

[O-GaugeOscar]

 Can anyone suggest a good track-cleaning car for addition to my "work train" on my three-rail American Flyer/Lionel layout?  Is this a feasible way to keep the rails clean?  Thanks.

[Fordiesel69]

I just zip tie a rag to the crappiest car a I have and pull it for 10 minutes.  I use 90%+ alchohol on the rag.

I pull it on the very tail end of the train so if it derails, it will not do so to the entire train.

[Pine River RR]

These guys have THE BEST TRACK CLEANING CAR EVER!!! http://www.rllines.com/Product.html It uses mini paint rollers that can be purchased at any hardware store. After use, the rollers can be cleaned and reused over and over. Steve Bergerson