![PROfile: Restrooms Plus](https://cole-promonthly.imgix.net/https%3A%2F%2Fwww.promonthly.com%2Fuploads%2Fimages%2Fjohn_steiner_1854.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=eecc8c0dbcd114ff7f43e2c8ce9ebd4d)
When Duane Barth purchased The Rental Store in Jamestown, N.D., in 1996, he had no idea portable sanitation would one day account for 80 percent of his business. Back then video rentals were a hot-ticket item at his four locations around Jamestown. Now, the outdated movie rentals...