Just putting this question out there for a few responses, since we are at the start of the summer break and kids will be milling about for the next lot of weeks.
To what extent do you allow the neighbourhood kids who are friendly with yours into your house? Do you let them into the children's bedrooms or limit them to a small area?
Are you happy with other kids in your garden, or do you worry about being liable for them in the event of a mishap? And if children just move there from playing in the street (i.e. not 'invited' in), are you then responsible for them?
My own mother was quite strict about this and would only allow a couple of friends into the hall on a wet day, no kids upstairs, and maybe only just friend in the garden. Just wondering what other people's views are?