Removing silicone

[Varanus762x39]

I am attempting to remove some clear silicone from the outside of my rear window. Using a metal razor blade, I removed most of it, however, it appears some residue is still left behind. I've attempted to use goo gone to remove it and its not working. Is there something else I could try to remove whats left?

[pajeff02]

There is a silicone remover sold at hardware stores. I do not recall the name of the product -- best recollection is that it came in a tube and had a gel-like consistency.