Rayon Mop Head: Rayon blended yarns offer superior absorbency and do not require a break-in period. Rayon yarn is also more bleach resistant and mildew resistant than cotton yarns. Rayon is more durable because it is produced with 100% long staple synthetic fibers. A Rayon Mop Head can be used effectively for all wet mopping applications including economical wax applications. Cut-End style mops are not machine launderable. Standard packaging is 12 units per case. Pricing is per unit and order quantity below is per unit. We will accept orders in less than case quantities.