One of the ways I judge people in interviews is whether they will "help out" if they see something needs doing... open a door for someone carrying a load, help stack papers for someone binding them (carried out a whole interview while binding a stack of docs once) and so on. If my staff see a room with dirty cups on the table and a client coming they better bloody clean it up! Sure we hire a cleaner but I also expect staff to maintain a certain level of hygiene in the interim!