Hi I only use one fluid for both, picked it up at the nec a few years back, called Onechem. ive got a feeling its recently changed its name, but its so easy to use.
Squeeze the bottle and it fills a measuring cup at the top, use less for the flush then more depending on the size of the waste container.
The measure amounts are shown easily on the instructions attached to the bottle.
Big advantage, saves space, easy to use, takes the guess work out measuring the liquid, only one bottle so makes for a slightly lighter payload.
The colour of the liquid is blue.
Seams to breakdown waste ok as well, but does have a bit of a chemical smell but fragranced so more pleasant than not using anything.
Hope this helps
John