I agree with catnapper. Removing the source when you are going to be gone will solve the problem. If she didnt know she could do it, she would be doing it when you are there- well she doesnt do that. She knows- just waiting for you to leave. I think she is using it as a source of something to do while you are gone. Get her one of those food balls.
I am also wondering if this is nevous energy- and if so- why is she nervous? Or did the housekeeping change when you moved, and now its a new game and something to do..