I don't know...they contaminate your machines, they use up your stuff, they leave dirty glass everywhere. And it's never anyone you know who's responsible, so it must be those pesky ghosts. I suppose I am in an old building.

Looks like you have been visited by the lab fairy.. she is such a cow at times lol :p

Ah, the lab fairy. I've heard that there is a Facebook group dedicated to her activities, but not being a Facebook member I can't confirm this.

She's been very busy this week, anyway.