Majestik Re-Charge 6000 portable restroom deodorizer from Imperial Industries is designed to destroy waste odors and leave a pleasant fragrance. It is super-concentrated and eco-friendly, according to the manufacturer, containing no formaldehyde or heavy metals. It is available in 1-gallon containers and 55-gallon drums. Scents include cherry and spice. 800/558-2945; www.imperialind.com.