[thawaway1837]

Why in the world would you stock it and use up valuable space, and fuel on carrying it around the world?

Also, it surely cannot be a good idea to keep massive amounts of acid around for non essential purposes.

[ulfw]

How is it non-essential if that's the only way to get the toilets going?

[vikramkr]

Its non essential if you can get it shipped there easily in a resupply