refurbish step-up on dually

[aatauses]

Hi everyone,
I have "step ups" on my dually made with rubber where you put your foot. They are getting "chalky" and wondering what I can use to bring them back to the original black rubber. I have tried 303, but that did not work--looking for what others have used.
Thanks
al
currently in Crystal River, FL

 

[katkens]

Meguiar and Mothers both have a product called Back to Black that works pretty good . I got Mothers here at Wally World and it worked well .

 

[hoefler]

There is a product that is called black chrome dressing, works very well.