Hide something protective in easy reach? (Easy for you to find, not for them, obviously) Don't know if that's a good idea or not, but is the only way I can think to sort something out if there's a problem when someone is already in your place. I've just started doing incalls, and haven't had any problems yet, but then I think I'm quite selective... just in case!

Im also a bit cautious of telling my friends about what I do. I stopped telling people what I do because you never know if someone may get vengeful and 'set off a tip'. I dont know how effective that is, but I definently take all aspects of incalls seriously.

I knew a friend who's landlord knew of her working. One day she couldn't come up with the rent and sure enough...the landlord tipped her off and the police ran a sting at her apartment. Thats why Im keeping a hush mouth to people I know