I have a customer that claims there is a a low wear belt recommended for Data Centers. He get his Data Center Cleaned once a year and is telling me that the belts I have been using on the maintenance are releasing to much belt dust causing his Data Center to get dirty. What is a good brand of belt to use in a Data Center that will release less belt dust/residue. I have been using the Gates brand and have everthing at the correct belt tension and alignment. My sheaves and pulleys are in good shape no deep groove or signs of slippage. Any advice would be appreciated.