VIGILANCE
Unless one is very vigilant, one's household hospitality may be perceived as one's acquiescence, which may invite the former "guests'" to become possessive, which can then become theirs by openly adverse possession! Thereby, your household becomes theirs by default, resulting in your ouster from "your" own land. Your ouster or your divestment may be effected by man or beast; by insect or rodent ; by bird or virus or debt! Stay vigilant, always!