A paw can be quite effective in hitting that isolated itch.
And those humans might be pretty effective if you can guide their skritches to the correct spot.
But sometimes you just have that whole body itch that needs to be addressed.
Then you need to be just a little more creative so that you can scratch one whole side of your body at a time.
At that point, it helps to have a house built with rough cedar siding.
Ahhhhhhh - that was perfect!