Summarize this article in one sentence.
If you have some double sided tape stuck to your window, you cannot use heat or you will risk cracking the glass. You also can't use anything too abrasive, or you will risk scratching the glass. Instead, you will need to dissolve the tape using oil. Here is a list of what you will need:  Butter knife (you can also use your fingernail) Window cleaner Sponge and glass scrub Cooking oil or cleaning oil (mineral oil, Goo Gone, etc) Rubbing alcohol

Summary:
Gather your supplies.