You have painted walls and you notice after a few months that they are full of...
... fingerprints.
It's almost mandatory, unfortunately.
But there is a trick to remove fingerprints from your painted walls:
1. Peel a potato.
2. Cut it in half.
3. Rub the traces with.
There you go, you've removed the fingerprints from your painted walls.
You get the same result with a cloth soaked in paraffin.
