some Eucalyptus torelliana and Eucalyptus robusta left after 4 days

Early morning:
Still have some Eucalyptus torelliana and Eucalyptus robusta left after 4 days.
Eucalyptus globulus finished, though only very small amount was offered as testing.
Possible that they prefer Eucalyptus globulus over another gum leaves。 Maybe aromatic plays a roll?
At night:
Oat also finished
Offered small pinches of mixed Eucalyptus globulus, AIF mulch, rolled oat, dried hay grass and cypress mulch
Immediately shown great interests in hay grass, and munch a bit on cypress mulch
Gave them a few pieces of lettuce, a medium size male nymph immediately drag the whole 1/4" pieces back into the burrow, bigger male also start eating another piece right away.