Until they get into your two story house in between floors, have 20 kids and live there crapping and pissing everywhere. Been there, done that and took about two months of trapping/releasing. They still hang around here at the house and the farm behind but the house entry for them is sealed finally. At the time I had to spray paint (little squirt) their back as some were still making their way back in the house. Not pleasant and appreciating them outside.