Wireless mouse not scrolling sometimes

[Yonnie3]

6. I find lint gets down around the scroll wheel

I have a Logitech M525. I take a plastic toothpick, bend a tiny hook in the end and poke it down to the axle of the scroll wheel. I then spin the wheel in different directions, wiggle the toothpick and fluff gets loosened up and can be pulled out. I use a bright flashlight and my strongest reading glasses to see. It takes some fiddling on either side of the wheel to get the fluff out.

Usually it will intermittently scroll in one direction when this is the problem.