Rear view mirror fell

2011 5.7 Crewmax
I've reinstalled these a few times on other simple mirror only cars without issue.
The Tundra is a little different in that it's a big heavy mirror with a camera and remote controls. The biggest issue I've never seen is there's a good amount of adhesive stuck on the mirror..it will catch on your finger nail.
What is the best method of removing it without damaging the glass.
If it were any other material I would chisel or chip at it.
Or is it removed chemically ??
Who has successfully reattached their
rear view mirror and how ??

 

razor blade and some windex. if you're really worried, get plastic razor blades.

 

Thought you were BS...
I had never seen a plastic razor blade.

 

They are great for cleaning a glass stove top too