Bottom Tank Green can be used in the holding tank of any portable or Permanent toilet using fresh or salt flushing water eg. portable toilet, caravan or home toilet, including marine holding tanks. 
Bottom Tank Green concentrate will break down solid waste, reduce the build-up of gases, reduce the ammonia from urine as well as break down toilet tissue and assist to keep your holding tank clean. 
Made in New Zealand for New Zealand conditions. 
Proven reliability as a responsible environmentally friendly waste treatment fluid. 
Will not harm septic tanks. 
Available in 500ml & 5ltr sizes.