If you have a squeaky door or doors in your home, we have the simple reamedy for you.
Simply take 2 paper towels or small rags and stuff them at the bottom and top of the door
hinges as to cover the back side of the hinge when the door is mostly opened from the over spray from
the W.D. 40 that you spray on the cracks of the hinges.
Remove the paper towels and wipe the hinge free from oil and the grey surround the hinge.
Repeat when the squeaking returns,