Our Facebook art giveaway contest ends on Wednesday. If you want to be in the drawing for pumper-related art prints, post on our Facebook page through the link below.

In 2006, artist Bill MacGregor, of Johnston, R.I., customized two of his most popular prints, “Outhouse Pumper’’ and “Porta Potties’’ to run with a story about his work depicting vintage trucks and equipment in Pumper magazine. We are giving away the pair of matted original prints, 11 by 14 inches in size, to fans who post to Facebook.

Go to the Pumper Facebook page – http://www.facebook.com/pages/Pumper-Magazine-Dedicated-to-the-liquid-waste-industry/108349609204240?ref=ts – and click “like’’ if you haven’t already. Then post the name of your company, and tell us what you think is the biggest issue facing the liquid waste industry today. From the “fans” who post to the Pumper Facebook page through Wednesday, we’ll draw two winners.

Good luck, and we’ll see you on Facebook!