Give me some sugar

We were sitting on our verandah last night, when we saw a little brown mouse-like creature crawling along the top of the sun shades. I immediately thought 'Time to put some more Ratsak in the ceiling'. But my wife thought it didn't look like a mouse, but more like a little bat or something. Our landlord has planted a particular type of tree in the garden with the intention of attracting sugar gliders (pictured above), which are a kind of mini possum that can apparently glide between trees. This guy has a pretty distinctive face, which I don't recall seeing on our visitor, so I am in two minds. We either have a very special guest or an infestation. I hope it's the former, because he's soooooooooooooooooooo cute.