It is gross to leave a house dirty.
Anna is about to go on a two week trip out of town.
She wants to clean up a little before she goes.
Anna gives the house a thorough cleaning and washes all her dishes and clothes.
Anna does some minimal cleaning but leaves a bunch of dirty dishes and clothes lying around.
Anna returns from her trip to a clean and spotless house which makes her happy to be home.
Anna returns to a house that smells like mildew and is full of bugs.