The Walex Porta-Pak combats unpleasant odours and rapidly breaks down paper and waste in your holding tank. Simply drop a single Porta-Pak into the tank and add water. The water-soluble sachets dissolve and will keep your tank smelling fresh for up to a week. This product is biodegradable and septic safe.


  • Breaks down all toilet waste and lubricates toilet valves and seals
  • Works in black and grey tanks
  • Pack contains 15 sachets
  • Sachet completely dissolves in water
  • Lasts for at least 1 week
  • No liquid mess, convenient to use and easy to store
  • Fume free
  • For use in a larger tank