My PIL lived with us for 3 months (came for two weeks and stayed 
). They obviously had a set of keys, would have been impractical without them. Thing is, they seem to feel too at home in our house now.
Yesterday i was upstairs with the baby, DP was on a call In the spare room (working from home) and they let themselves in and made a cup of tea and some butter icing (for buns for us so i can hardly complain).
It's nice they feel at home and everything but, maybe not quite that at home?
It could have been disasterous because just before i ran up to resettle DD i had been wrapping a Christmas present for a member of the family that PIL get very upset with us for still speaking to (whole other thread but would out me ). Suffice to say Last time they had a reminder we are still talking to they who shall not be named PIL stopped speaking to us for 6 months.
The other day i came back from the shops to find some stuff had been left on the kitchen table. They had let themselves in whilst i was out. If we go out or away they sometimes come round to watch tv (we have sky and some of their stuff is still on series link recording)
I have already begun the groundwork for getting the keys back (have lost my set) but am i being a miserable cow about thi? DP would tackle if i said it was bugging me but there is a history of falling out in the family so we tend to walk on egg shells.