Don't get upset or too personal about this matter. Everything in this world changes,,,the most important thing is,,,they come to ur house with all respect,,,they didn't broke or steal anything from ur house,,lol....
the thing is, if we will invite people into our house, it is our duty to be hospitable and accommodating to our visitors,,,we should not expect from anything in return from them..what's important is that they come to our house with a humble heart and accepted our invitation wholeheartedly..at the end of the day,,a simple thank you that they enjoyed is enough for us to be happy