I want to start putting ground cover down on the sub-roadbed. I plan on using real dirt, ready mix cement powder, and dried tea leaves as ground cover. My question is in regards to covering the track when I put down the glue/water mix, sprinkle the ground cover, and saturate the area with hair spray. I have seen guys use blue painters tape to cover the track while doing the scenery work on Youtube. Does it leave any type of sticky residue on the rails after removing the tape? Does anyone know if there is something better to use than blue painters tape?