Elsan

Portable toilets, often referred to as Porta Potties (American English), or Porta Loos (UK), are simple portable enclosures containing a chemical toilet which are typically used as a temporary toilet for construction sites or large gatherings because of their durability and convenience. Most portable toilets have black open-front U-shaped toilet seats with a cover. They are often constructed out of lightweight molded plastic. The modern plastic portable toilet has been manufactured since the 1960s.