Likely Pharaoh's Ants (Monomorium Pharaonis); they love butter.
https://www.pestcontrol.org.au/ants.html
Quote:
|
1.5-2.0 mm Light yellowish brown to darker brown. Top and tip of abdomen slightly darker. 2 nodes on pedicel. No spines on thorax. Antenna clubbed with three enlarged segments. No odour when crushed.
|