How to clean ez streets or k like streets tracks ?

@trainroomgary has put out a useful video on the subject:  

For a trolley or other line with sharp curves,  I recommend using an 1867 or 1877 short flatcar with the truss rods removed; cut slots in the magic eraser and slide it over the truss posts to hold it in place.  Use an 0-4-0 switcher to push or pull it.   Don't forget to add weight to the flatcar!   

Mitch