It comes with the attached black "scraper" but I have never needed it. I squirt a little undu on a a paper towel or rag, and gently swipe across whatever I need to remove.
The latest is velcro sticky from a dashboard and my absolute worst job is removing the stickiness from the floor that the felt pads on the bottom of chairs sometimes leave.
I struggled with the felt pad adhesive for a few days and gave the undo a try. It worked beautifully.
It is over $6 for the tiny bottle, but I use it sparingly and it is well worth the cost.