To be an echo in the room you'd want to go from end to end wiggling on it and find where it's most loose and find small flat object, I used a small screw driver, and very carefully wiggle the screw driver in a prying motion and it should come up at that point a little, then you carefully pry the rest of it off making sure your not warping the plastic as it comes off. It is only held on by some double sided tape so minimal force is necessary. Hope this helps.