Woodland Scenics Smooth-It Question

[torikoos]

I see , that clarifies your concern much better, indeed do mix in some colour. However, you could try a non-abrasive type of cleaner, for the street running section at least. You could use some mild denatured alcohol on a Q-tip to clean the railheads, although this can become quite tedious if you have large sections of street running. You could also consider getting another 'wet cleaning' device, there are some track cleaning cars out there that use a liquid and won't scratch, the road surface.

Alternatively you could use thin sheet styrene for your roads, especially between the rails, that also needs painting, but as it comes in many different 'thickness-sizes' , you could use a styrene that is thin enough so it is slightly lower than the rail heads, and an abrasive track cleaning block won't touch it, yet cleans the rail.

Koos