This is a handy "go-anywhere" portable field loo, that I've found a great relief when out and about, especially when there are no facilities, or those on offer don't come up to scratch (I'm a bit fussy like that). The supplied bags are good, but it'll also take small swing bin liners available from most supermarkets (or of course "convenience" stores). I find lining the bag with one or two sheets of absorbent kitchen paper helps soak up excess "moisture", though it's wise to find an alternative outlet for such matters first, if feasible.
Just one thing, though robust enough my reasonably slight (9 and half stone) frame, I'm not sure it would take a much heavier load, or prolonged use in one sitting, but perhaps it would.
It's small enough to fold up neatly in my 'man-bag', and easily wipe cleaned and/or disinfected. This is a number one (or rather, two) portable potty - I wouldn't go on a field trip without it!