I've been trying to find this one fic but I haven't had any luck.
Basically Tony made house keeping robots for each of the Avenger's room/floor. But because they're so well designed, they're quiet enough to even sneak up on Clint which doesn't rub well with him since his line of work relies on his ability to detect people/things before they sneak up on him. So he is untrustful of the two cleaning robots and retaliates by treating them badly. Tony finally took them off his floor and eventually Clint apologises to the two robots and they go back to cleaning up his room. I think Clint even names them? I remember that near the end the two robots even "attacked" Tony to prevent him from waking up a sleeping Clint after he came back from a very exhausting mission.