The three-station 14-foot restroom trailer from Comforts of Home Services has a 450-gallon waste tank that provides 1,125 to 1,350 uses between servicing. It offers three private restrooms, which can be unisex or gender specific. It comes standard with a 13,500 Btu air conditioner and 5,600 Btu heat strip, which can keep the trailer comfortable down to 50 degrees F (optional packages are available to operate the trailer in colder climates). The standard interior package includes white FRP walls with wood trim, choice of sheet vinyl floor, pedestal sinks, RV-style foot-pedal flush toilet, and a utility room. 630/906-8002; www.cohsi.com.