I have had lots of outcalls to my house and to my office over the last 15 years and never had a problem.
As others have said you have to know who is visiting you, do your research and only book someone you are 100% happy with.
Perhaps I have been very lucky and you do have to evaluate the risk and reward, but for me there is the comfort of being in my own space, and yes I do check I have not left anything of great value lying around, jewelry, wallet, ipads etc. But I would do the same if my son was having some of his mates over.
The one thing it does leave you with is some great memories in places you are familiar with.
I am sat at my desk at work now and it doesnt take much to remind me of past exploits like a girl called Angel bent over it while I did her doggy and her demanding I push a vibrator up her arse.
And then at home when I am lying in bed I can still the legendary xxChloexx riding me reverse cowgirl in the mirror at the end of the bed.
I enjoy outcalls and totally agree do your research