SANTA ANA, Calif. — R&B Wire Products Inc., in celebration of its 65th anniversary, is holding a contest to find the oldest R&B cart still in use. R&B Wire Products invented the wire laundry cart, as we know it, 65 years ago, the company says. To enter this contest, simply e-mail a photo of your laundry cart to firstname.lastname@example.org. Include your name, store, and contact information.The overall winner will receive six R&B 100 CEC laundry carts; the second-place winner receives three laundry carts, and the third-place winner receives one cart. The winners will be announced at Clean 2011 on Wednesday, June 8 at R&B’s booth 2243. Winners need not be present. More details, including the time when the winners will be announced, can be found at R&B’s website.The Clean Show will be held at the Las Vegas Convention Center June 6-9. For more information about Clean 2011, go to www.cleanshow.com.