What tool should be used to clean under the nail plate?

The wooden pusher is an ideal tool for cleaning under the nail plate because it is specifically designed to be gentle on the delicate skin and nail that is present in that area. The wood material allows for effective cleaning without causing injury or irritation. Additionally, the tapered end of the wooden pusher can reach into tight spaces under the nail plate, effectively removing debris and ensuring proper hygiene.

Using a metal pusher could pose a risk of damaging the nail or surrounding skin since it is stiffer and less forgiving than wood. A nail brush is more suited for cleaning the surface of the nails rather than getting into the area beneath the nail plate. A cotton swab may not provide the necessary rigidity or precision needed to thoroughly clean under the nail, making it less effective for this specific task. Thus, the wooden pusher stands out as the most appropriate and safe option for this particular cleaning purpose.