You cannot call your house clean if you have grease splatter spots on the wall behind the stove. They look ugly and after awhile the accumulated grease gets rancid so that your house doesn’t smell so good. So let’s get to it.
Put a little dish soap on a Dobie’ or other “scrubby” pad safe for non-stick surfaces, and gently rub the spots. (Be sure to test it in an inconspicuous area first).
If that doesn’t work, take it up a notch and use an all-purpose cleaner such as 409 on the scrubby pad.
And if the spots are still there, don’t scrub harder, use a more powerful cleaning agent like Dow Bathroom Cleaner (with the famous scrubbing bubbles) and then rinse the area with hot water.
After the area is clean, apply a generous coat of paste wax. Subsequent spots can then be removed with a dry paper towel. Reapply paste wax as necessary.
Now, that’s pretty easy. Housekeeping doesn’t have to be hard.