Clean the caster, you only need a Mop.
How to clean the casters
The casters had become dirty with an assortment of debris, sometimes the dust on the floor will sticks on the surface of caster due to rolling, and had the black crumbs or debris fall during the movement of the casters. In fact, the debris combines with the normal amount of dust and hair that accumulates on the floor, so the debris is not peeling off from the casters. Please follow steps below to clean the casters.
Step1: Sweep/Vacuum the floor and Mop the floor. The dust on the floor is the mean reason to make the caster wheels dirty, so highly recommended clean the floor before you clean the caster wheels.
Step2: Use a rag to clean caster wheels. wiped caster wheels over with a damp rag.
If you want to keep the caster wheels clean, please sweep/vacuum the rooms often and clean the caster wheels once a week.
Let Enjoy caster tell you how to clean your caster wheels.